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JSC Weather Monthly Summary


JSC Building 30 Weather         Month:  May          Year:       2009

        Temperature in F                        Precipitation (inches)              Peak Wind (mph)             Altimeter

     Day  Max    Min   Average   HDD     CDD    Water   Snow  Snow Depth   Weather Direction Speed  Time [CDT]  Min    Max    Remarks

       1   82    73      77.5           12.5    0.01                                  S        24      1252     29.95  30.05
       2   80    74      77.0           12.0    0.00                                  SW       25      1754     29.77  29.99                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
       3   83    72      77.5           12.5    0.00                                  SW       26      1438#    29.75  29.88                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
       4   80    64      72.0            7.0    0.00                                  N        20      0838#    29.85  29.98                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
       5   82    73      77.5           12.5    0.00                                  S        25      1508     29.79  29.95                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
       6   84    75      79.5           14.5    0.00                                  S        32      1048#    29.76  29.87                                                                                                                                                                                                                                                                
       7   83    76      79.5           14.5    0.00                                  S        23      1628#    29.83  29.92                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
       8   84    76      80.0           15.0    0.00                                  S        28      1212     29.77  29.86                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
       9   84    76      80.0           15.0    0.00                                  S        23      1026     29.81  29.99                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
      10   85    76      80.5           15.5    0.00                                  S        24      1400     29.95  30.04                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
      11   85    76      80.5           15.5    Trace                                 S        23      1534#    29.93  30.04                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
      12   84    75      79.5           14.5    0.00                                  SE       23      1610#    29.90  30.03                                                                                                                   
      13   74    76      75.0           10.0    0.00                                  S        29      1358#    29.87  29.95                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
      14   83    74      78.5           13.5    0.00                                  SE       23      1818#    29.92  30.07                                                                                                                                                                                                                                                                                                                                                           
      15   74    75      74.5            9.5    0.00                                  SE       22      1232     29.92  30.05                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
      16   85    71      78.0           13.0    0.00                                  NE       20      2328#    29.93  30.04                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
      17   75    63      69.0            4.0    0.00                                  NE       30      2144#    30.02  30.15                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
      18   76    59      67.5            2.5    0.00                                  N        26      1408     30.09  30.20                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
      19   76    61      68.5            3.5    0.00                                  SE       19      1504#    30.10  30.21                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
      20   80    65      72.5            7.5    0.00                                  SE       16      1400#    29.98  30.14                                                                                                                                                                                                                                  
      21   82    68      75.0           10.0    0.00                                  E        17      1428     29.90  30.01                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
      22   82    68      75.0           10.0    0.00                                  NE       16      1644#    29.85  29.95                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
      23   80    70      75.0           10.0    0.17                             3    NW       18      1500#    29.80  29.91                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
      24   81    65      73.0            8.0    0.53                           1,3    W        45      1604     29.76  29.86                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
      25   86    66      76.0           11.0    0.00                                  SE       19      1848#    29.69  29.82                                                                                                                                                                                                                                                                                                                                                                                          
      26   90    MM      MM.M            M.M    0.00                             8    M        MM      MMMM     MM.MM  MM.MM                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
      27   81    73      77.0           12.0    0.02                             3    SE       32      1450     29.72  29.90                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        28   84    71      77.5           12.5    0.00                             8    NE       18      1158     29.83  29.94
	  29   87    71      79.0           14.0    0.00                                  SW       16      2006     29.91  30.04                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
      30   87    74      80.5           15.5    0.00                                  SW       19      1920     29.94  30.05                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
      31   83    72      77.5           12.5    0.00                                  E        22      1522     29.94  30.05                                                                                                                                                                                                                                                                                                                                

Sum                             00.0   340.0    0.73            

Average 82.0    70.9      76.5                    
Maximum   90      76                                                                           45                      30.21
Minimum   74      59                                                                                            29.69

Temperature Data         Precipitation Data              Weather Symbols:
Average Monthly:      77 Total for month:             0.73      1 Fog
JSC avg-EFD Climo   +1.0 JSC - EFD Climo:            -3.77      2 Fog, VSBY <= 1/4 SM
Highest:      90 on 26th Greatest daily total:        0.53      3 Thunder
Lowest:       59 on 18th Days with 0.01" or more:        4      4 Ice Pellets
                         Days with 0.10" or more:        2      5 Hail
                         Days with 0.50" or more:        1      6 Glaze or rime
                         Days with 1.00" or more:        0      7 Blowing Dust or Sand, VSB <= 1/2 SM
                         Year-to-date rainfall:      22.77      8 Smoke or Haze
                         Days with thunder:              3      9 Blowing Snow
                         Lightning flashes within      TBD      X Tornado, waterspout, funnel cloud
                         Days with dense fog:            0      # Last of more than one occurrence
JSC - EFD climate year to end of month: +5.67
Remarks: 
Year-to-date rainfall is underestimated due to data outage in February.
Period of Record of Ellington Field climatology for comparison.  POR 07/1941 - 08/2007  


JSC weather observations are considered experimental and unofficial. Quality control procedures of the data appearing
on this page are minimal. SMG does not maintain a routine weather watch so absence of a weather type does
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