Climate Data
Monthly Numbers
Interested in temperature and precipitation numbers in Harrison? Check them out on a monthly basis below.
 
Climate Summary (Sep 2011)
 
...THE HARRISON CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2011...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2011

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR'S         
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)      
                                          NORMAL                      
................................................................
TEMPERATURE (F)
RECORD
 HIGH             106   09/03/1939                                    
                        09/05/1913                                    
                        09/04/1913                                    
 LOW               30   09/29/1967                                    
HIGHEST            97   09/01        80      17       92  09/19       
LOWEST             42   09/26        59     -17       46  09/27       
AVG. MAXIMUM     78.7              80.6    -1.9     81.9              
AVG. MINIMUM     54.0              57.8    -3.8     60.9              
MEAN             66.4              69.2    -2.8     71.4              
DAYS MAX >= 90      5               3.2     1.8        3              
DAYS MAX <= 32      0               0.0     0.0        0              
DAYS MIN <= 32      0               0.0     0.0        0              
DAYS MIN <= 0       0               0.0     0.0        0              

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.80   1930                                          
 MINIMUM         0.08   1928                                          
TOTALS           3.58              4.20   -0.62    11.34              
DAILY AVG.       0.12              0.14   -0.02     0.38              
DAYS >= .01         7              10.5    -3.5       12              
DAYS >= .10         4                                  9              
DAYS >= .50         2                                  6              
DAYS >= 1.00        2               1.4     0.6        3              
GREATEST
 24 HR. TOTAL    2.08   09/16 TO 09/17                                

SNOWFALL (INCHES)
TOTALS            0.0               0.0     0.0      0.0              
 LIQUID EQUIV    0.00                                                 
SINCE 7/1         0.0                                                 
 LIQUID 7/1      0.00                                                 
SNOWDEPTH AVG.      0                                                 
DAYS >= TRACE       0               0.0     0.0        0              
DAYS >= 1.0         0                                  0              
GREATEST
 SNOW DEPTH         0                                                 
 24 HR TOTAL      0.0   09/30 TO 09/30                                

DEGREE_DAYS
HEATING TOTAL      68                42      26       17              
 SINCE 7/1         68                43      25       17              
COOLING TOTAL     117               168     -51      218              
 SINCE 1/1       1829              1379     450     1830              

FREEZE DATES
RECORD
 EARLIEST     09/13/1902                                              
 LATEST       05/17/1912                                              
EARLIEST                        10/29                                 
LATEST                          04/04                                 
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.4
HIGHEST WIND SPEED/DIRECTION    21/010    DATE  09/05
HIGHEST GUST SPEED/DIRECTION    29/010    DATE  09/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM                                      
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           20
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY          4

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH 
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       3
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      2
HAZE                      8                                           
                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          

&&

...ADDITIONAL DATA FOR HARRISON FOR SEPTEMBER 2011...

TEMPERATURE
___________

AVERAGE MONTHLY HIGH....COOLEST SINCE 2009
AVERAGE MONTHLY LOW.....COOLEST SINCE 1974
AVERAGE MONTHLY.........COOLEST SINCE 1989 AND THE 8TH COOLEST ON RECORD

NUMBER OF DAYS WITH DAILY AVERAGE TEMPERATURES...

AT NORMAL........ 2     ABOVE NORMAL..... 8     BELOW NORMAL.....20

HIGHEST TEMPERATURE........97 ON THE  1ST
LOWEST TEMPERATURE.........42 ON THE 26TH

NUMBER OF DAYS WITH...

HIGHS AT OR ABOVE 90 DEGREES...... 5...MOST SINCE 2005
HIGHS AT OR ABOVE 80 DEGREES......15...FEWEST SINCE 2009 
HIGHS BELOW 80 DEGREES............15...MOST SINCE 2009 
HIGHS BELOW 70 DEGREES............ 5...MOST SINCE 1995

LOWS AT OR ABOVE 70 DEGREES....... 2...SAME AS 2010
LOWS BELOW 70 DEGREES.............28...SAME AS 2010
LOWS BELOW 60 DEGREES.............25...MOST SINCE 1974
LOWS BELOW 50 DEGREES............. 8...MOST SINCE 2001

DAILY TEMPERATURE RECORDS TIED OR BROKEN DURING THE MONTH...

DATE  RECORD TYPE                NEW RECORD    OLD RECORD 
16TH  LOWEST HIGH TEMPERATURE    64 IN 2011    66 IN 1949
17TH  LOWEST HIGH TEMPERATURE    57 IN 2011    61 IN 1981

OTHER INFORMATION...

DATE  WARMEST READINGS DURING THE MONTH            TEMPERATURE
 1ST  5TH WARMEST LOW TEMPERATURE FOR SEPTEMBER         74

RAINFALL
________

MONTHLY RAINFALL......DRIEST SINCE 2007.

NUMBER OF DAYS WITH...

MEASURABLE RAINFALL...................... 7 FEWEST SINCE 2008 
RAINFALL OF 1.00 INCHES OR GREATER....... 2 FEWEST SINCE 2010

DAILY RAINFALL RECORDS TIED OR BROKEN DURING THE MONTH...

DATE  RECORD TYPE                NEW RECORD    OLD RECORD 
17TH  DAILY RAINFALL            1.98 IN 2011  1.65 IN 1912

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