...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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