...THE HARRISON CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2010...
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1891 TO 2010
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 82 12/24/1955
LOW -11 12/23/1989
HIGHEST 66 12/31 47 19 60 12/22
LOWEST 10 12/13 29 -19 10 12/10
AVG. MAXIMUM 46.2 47.4 -1.2 44.2
AVG. MINIMUM 26.7 28.8 -2.1 26.2
MEAN 36.5 38.1 -1.6 35.2
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 3 3.3 -0.3 3
DAYS MIN <= 32 24 19.5 4.5 24
DAYS MIN <= 0 0 0.4 -0.4 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 11.64 1982
MINIMUM 0.22 1919
TOTALS 0.68 3.63 -2.95 1.69
DAILY AVG. 0.02 0.12 -0.10 0.05
DAYS >= .01 6 8.7 -2.7 7
DAYS >= .10 4 3
DAYS >= .50 0 2
DAYS >= 1.00 0 1.0 -1.0 0
GREATEST
24 HR. TOTAL 0.28 12/30 TO 12/31
SNOWFALL (INCHES)
RECORDS
TOTAL 23.0 1966
24 HR TOTAL 13.0 12/23/1966
TOTALS T 1.5 -1.5 0.7
LIQUID EQUIV T
SINCE 7/1 T
LIQUID 7/1 T
SNOWDEPTH AVG. 0
DAYS >= TRACE 4 0.9 3.1 5
DAYS >= 1.0 0 0
GREATEST
SNOW DEPTH 0
24 HR TOTAL T 12/26 TO 12/26
12/25 TO 12/25
12/24 TO 12/24
DEGREE_DAYS
HEATING TOTAL 875 834 41 915
SINCE 7/1 1454 1612 -158 1592
COOLING TOTAL 0 0 0 0
SINCE 1/1 1866 1443 423 1198
FREEZE DATES
RECORD
EARLIEST 09/13/1902
LATEST 05/17/1912
EARLIEST 10/29
LATEST 04/04
.................................................................
WIND (MPH)
AVERAGE WIND SPEED 8.2
HIGHEST WIND SPEED/DIRECTION 31/250 DATE 12/31
HIGHEST GUST SPEED/DIRECTION 47/300 DATE 12/12
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
NUMBER OF DAYS FAIR 14
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 5
AVERAGE RH (PERCENT) 64
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 1
LIGHT RAIN 5 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 4 SLEET 0
FOG 11 FOG W/VIS <= 1/4 MILE 3
HAZE 11
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
...ADDITIONAL DATA FOR HARRISON FOR DECEMBER 2010...
BOTH THE AVERAGE MONTHLY AND AVERAGE HIGH TEMPERATURES WERE A LITTLE
WARMER THAN 2009. HOWEVER...THEY WERE STILL COLDER THAN EVERY
DECEMBER FROM 2001 THROUGH 2008. THE AVERAGE LOW WAS THE WARMEST
SINCE 2008...BUT STILL COOLER THAN EVERY DECEMBER FROM 2001 THROUGH
2007.
DAILY AVERAGE TEMPERATURES WERE ABOVE NORMAL ON 11 DAYS...AT NORMAL
ON ONE DAY...AND BELOW NORMAL ON 19 DAYS.
NO DAILY TEMPERATURE RECORDS WERE TIED OR BROKEN DURING THE MONTH.
IT WAS THE DRIEST DECEMBER SINCE 2005 AND THE 10TH DRIEST ON RECORD.
NO DAILY RAINFALL RECORDS WERE TIED OR BROKEN DURING THE MONTH.
FOR THE FIRST TIME SINCE 2007...NO MEASURABLE SNOW FELL DURING THE
MONTH. ONLY A TRACE OF SNOW FELL.
NO DAILY SNOWFALL RECORDS WERE TIED OR BROKEN DURING THE MONTH.
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