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

CLIMATE NORMAL PERIOD 1971 TO 2000
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              99   05/29/1926
                        05/28/1926
 LOW               26   05/02/1911
                        05/01/1903
HIGHEST            88   05/09        76      12       88  05/24
                        05/08
LOWEST             37   05/03        56     -19       45  05/09
                                                          05/08
AVG. MAXIMUM     73.8              75.8    -2.0     77.8
AVG. MINIMUM     53.9              56.3    -2.4     57.5
MEAN             63.9              66.1    -2.2     67.6
DAYS MAX >= 90      0               0.4    -0.4        0
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        16.87   1961
 MINIMUM         0.70   1911
TOTALS           9.51              5.01    4.50     7.32
DAILY AVG.       0.31              0.16    0.15     0.24
DAYS >= .01        15              11.1     3.9       14
DAYS >= .10         9                                 10
DAYS >= .50         6                                  6
DAYS >= 1.00        4               1.7     2.3        3
GREATEST
 24 HR. TOTAL    3.02   05/22 TO 05/23

SNOWFALL (INCHES)
TOTALS            0.0               0.0     0.0      0.0
 LIQUID EQUIV    0.00
SINCE 7/1        19.4
 LIQUID 7/1      1.94
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   05/31 TO 05/31

DEGREE_DAYS
HEATING TOTAL     148                83      65       44
 SINCE 7/1       3902              4058    -156     4148
COOLING TOTAL     119               115       4      136
 SINCE 1/1        178               139      39      192

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

WIND (MPH)
AVERAGE WIND SPEED              8.5
HIGHEST WIND SPEED/DIRECTION    30/260    DATE  05/25
HIGHEST GUST SPEED/DIRECTION    44/250    DATE  05/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           16
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     74

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                8     RAIN                      10
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      20     FOG W/VIS <= 1/4 MILE      2
HAZE                      9

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&

...ADDITIONAL DATA FOR HARRISON FOR MAY 2011...

THE AVERAGE HIGH TEMPERATURE WAS THE COOLEST SINCE 2009. THE AVERAGE
LOW WAS THE COOLEST SINCE 2005. THE AVERAGE MONTHLY TEMPERATURE WAS
THE COOLEST SINCE 2002.

THERE WERE 16 DAYS WITH AVERAGE TEMPERATURES BELOW NORMAL...ONE DAY
AT NORMAL...AND 14 DAYS ABOVE NORMAL.

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

DATE  RECORD TYPE                NEW RECORD    OLD RECORD
 2ND  LOWEST HIGH TEMPERATURE    45 IN 2011    52 IN 1994
14TH  LOWEST HIGH TEMPERATURE    54 IN 2011    58 IN 1897
30TH  HIGHEST LOW TEMPERATURE    73 IN 2011    72 IN 1989

ON THE 2ND...THE HIGH TEMPERATURE OF 45 DEGREES BROKE THE RECORD FOR
THE LOWEST HIGH TEMPERATURE EVER RECORDED IN THE MONTH OF MAY. THE
PREVIOUS RECORD WAS 49 DEGREES...WHICH WAS SET ON MAY 3RD 1978. THIS
WAS ALSO THE COOLEST HIGH TEMPERATURE IN MAY SINCE MAY 3RD 1978.

ON THE 2ND...THE DAILY AVERAGE TEMPERATURE OF 43.0 DEGREES WAS THE
COOLEST DAILY AVERAGE TEMPERATURE IN MAY SINCE MAY 1ST 1909...AND
THE 4TH COOLEST ON RECORD.

ON THE 30TH...THE LOW TEMPERATURE OF 73 DEGREES WAS THE WARMEST LOW
TEMPERATURE IN MAY SINCE 2006...AND THE 4TH WARMEST ON RECORD.

THERE WERE THREE DAYS WITH LOW TEMPERATURES BELOW 40 DEGREES...WHICH
WAS THE MOST IN MAY SINCE 2005.

THERE WAS ONE DAY WITH A HIGH BELOW 50 DEGREES...WHICH TIED 1978 AND
1907 FOR THE MOST ON RECORD IN THE MONTH OF MAY.

THERE WERE 20 DAYS WITH HIGH TEMPERATURES AT OR BELOW 80 DEGREES...
WHICH WAS THE MOST SINCE 2008.

IT WAS THE WETTEST MAY SINCE 1990...AND THE 8TH WETTEST MAY ON
RECORD.

DATE  RECORD TYPE           NEW RECORD             OLD RECORD
 1ST DAILY RAINFALL     2.04 INCHES IN 2011    1.91 INCHES IN 1970

THERE WERE 15 DAYS WITH MEASURABLE RAINFALL...WHICH WAS THE MOST
SINCE 2009.

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