...THE HARRISON CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2012...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2013
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 77 12/02 47 30 66 12/29
LOWEST 16 12/11 29 -13 19 12/24
12/10
AVG. MAXIMUM 53.7 47.7 6.0 51.0
AVG. MINIMUM 34.0 28.4 5.6 32.3
MEAN 43.8 38.1 5.7 41.7
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 2 2.6 -0.6 1
DAYS MIN <= 32 17 19.7 -2.7 18
DAYS MIN <= 0 0 0.3 -0.3 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 11.64 1982
MINIMUM 0.22 1919
TOTALS 2.08 3.20 -1.12 3.74
DAILY AVG. 0.07 0.10 -0.03 0.12
DAYS >= .01 9 7.9 1.1 9
DAYS >= .10 5 7
DAYS >= .50 2 5
DAYS >= 1.00 0 0.5 -0.5 0
GREATEST
24 HR. TOTAL 0.73 12/31 TO 12/31
SNOWFALL (INCHES)
RECORDS
TOTAL 23.0 1966
24 HR TOTAL 13.0 12/23/1966 TO 12/23/1966
SNOW DEPTH 13 12/08/1917
TOTALS 0.3 1.3 -1.0 0.9
LIQUID EQUIV 0.03 0.10 -0.07 0.09
SINCE 7/1 0.3 1.8 -1.5 0.9
LIQUID 7/1 0.03 0.10 -0.07 0.09
SNOWDEPTH AVG. 0
DAYS >= TRACE 5 4.0 1.0 2
DAYS >= 1.0 0 0
GREATEST
SNOW DEPTH T 12/26
24 HR TOTAL 0.3 12/25 TO 12/25
DEGREE_DAYS
HEATING TOTAL 656 835 -179 716
SINCE 7/1 1408 1599 -191 1412
COOLING TOTAL 8 0 8 0
SINCE 1/1 1969 1416 553 1863
FREEZE DATES
RECORD
EARLIEST 09/13/1902
LATEST 05/17/1912
EARLIEST 10/29
LATEST 04/04
.....................................................
WIND (MPH)
AVERAGE WIND SPEED 7.9
HIGHEST WIND SPEED/DIRECTION 33/260 DATE 12/20
HIGHEST GUST SPEED/DIRECTION 47/300 DATE 12/20
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.30
NUMBER OF DAYS FAIR 19
NUMBER OF DAYS PC 6
NUMBER OF DAYS CLOUDY 6
AVERAGE RH (PERCENT) 65
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 5
LIGHT RAIN 8 FREEZING RAIN 0
LT FREEZING RAIN 1 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 5 SLEET 0
FOG 12 FOG W/VIS <= 1/4 MILE 3
HAZE 5
- 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 2012...
.SUMMARY...
THERE WERE PERIODIC EPISODES OF WARM WEATHER DURING THE MONTH...WITH
TEMPERATURES EVEN REACHING THE UPPER 70S ON THE 2ND. HOWEVER...LATE
ON THE 24TH...MUCH COLDER AIR MOVED INTO THE REGION...AND REMAINED
THROUGH THE END OF THE MONTH.
.MONTHLY TEMPERATURES...
THE AVERAGE HIGH TEMPERATURE WAS THE WARMEST SINCE 1984. THE AVERAGE
LOW WAS THE WARMEST SINCE 1984...AND THE 7TH WARMEST ON RECORD. THE
AVERAGE MONTHLY TEMPERATURE WAS THE WARMEST SINCE 1984.
.DAILY AVERAGE TEMPERATURES...
BELOW NORMAL ON 10 DAYS AND ABOVE NORMAL ON 21 DAYS.
.NUMBER OF DAYS WITH
TEMPERATURES AT OR BELOW FREEZING...17 (FEWEST SINCE 2006)
TEMPERATURES AT OR ABOVE 70 DEGREES...2 (MOST SINCE 2006)
.DAILY TEMPERATURE RECORDS TIED OR BROKEN DURING THE MONTH...
DATE RECORD TYPE NEW RECORD OLD RECORD
2ND HIGH TEMPERATURE 77 IN 2012 75 IN 1950
HIGHEST LOW TEMPERATURE 62 IN 2012 62 IN 1982
3RD HIGHEST LOW TEMPERATURE 62 IN 2012 60 IN 1998
.RAINFALL...
IT WAS THE DRIEST DECEMBER SINCE 2010.
.DAILY RAINFALL RECORDS TIED OR BROKEN DURING THE MONTH...
NONE.
.SNOWFALL...
IT WAS THE LEAST SNOW IN DECEMBER SINCE 2010.
.DAILY SNOWFALL RECORDS TIED OR BROKEN DURING THE MONTH...
DATE NEW RECORD OLD RECORD
20TH TRACE IN 2012 TRACE IN 1995...1983...1977
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