...THE HARRISON CLIMATE SUMMARY FOR THE MONTH OF MAY 2020...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1891 TO 2020
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 86 05/24 76 10 87 05/16
05/02
LOWEST 36 05/09 56 -20 44 05/13
05/10
AVG. MAXIMUM 73.3 76.2 -2.9 76.8
AVG. MINIMUM 53.6 55.4 -1.8 57.1
MEAN 63.4 65.8 -2.4 67.0
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 0.59 2012
TOTALS 7.76 4.69 3.07 5.98
DAILY AVG. 0.25 0.15 0.10 0.19
DAYS >= .01 16 12.6 3.4 12
DAYS >= .10 12 9
DAYS >= .50 7 4
DAYS >= 1.00 1 1.6 -0.6 2
GREATEST
24 HR. TOTAL 2.85 05/16 TO 05/17
SNOWFALL (INCHES)
RECORDS
TOTAL 0.1 2013
24 HR TOTAL 0.1 05/03/2013 TO 05/03/2013
SNOW DEPTH T 05/03/2013
TOTALS 0.0 0.0 0.0 0.0
LIQUID EQUIV 0.00 0.00 0.00 0.00
SINCE 7/1 1.3 11.5 -10.2 4.5
LIQUID 7/1 0.13 1.00 -0.87 0.45
SNOWDEPTH AVG. 0
DAYS >= TRACE 0 0.0 0.0 0
DAYS >= 1.0 0 0
GREATEST
SNOW DEPTH 0 MM
24 HR TOTAL 0.0
DEGREE_DAYS
HEATING TOTAL 112 77 35 60
SINCE 7/1 3734 3998 -264 3989
COOLING TOTAL 72 102 -30 128
SINCE 1/1 121 139 -18 171
FREEZE DATES
RECORD
EARLIEST 09/13/1902
LATEST 05/17/1912
EARLIEST 10/29
LATEST 04/04
.................................................................
WIND (MPH)
AVERAGE WIND SPEED 6.9
HIGHEST WIND SPEED/DIRECTION 26/050 DATE 05/15
HIGHEST GUST SPEED/DIRECTION 41/340 DATE 05/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.50
NUMBER OF DAYS FAIR 12
NUMBER OF DAYS PC 13
NUMBER OF DAYS CLOUDY 6
AVERAGE RH (PERCENT) 72
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
&&
...Harrison Supplemental Climate Summary for May 2020...
.Summary
As far as temperatures go, extended periods of warmth were few and far between.
In fact, going by departure from normal, the warmest days were in the first few days
of the month, and a couple of days in the final week. By and large, though, most days
saw below average temperatures. Rainfall was frequent, and distributed throughout the
month, though there were never any breaks in the rain longer than three days.
.Monthly Temperatures
The average high temperature was the coldest since 2002, and the 11th coldest on record
The average low temperature was the coldest since 2005
The average monthly temperature was the coldest since 2002
.Daily Temperatures
Above average on 12 days
Below average on 17 days
Average on 2 days
Days with lows AOA 70: 0 (first time since 2017)
Days with highs AOA 90: 0 (second May in a row)
.Daily Temperature Records Tied or Broken During the Month
Date Record Type New Record Previous Record
11th Coldest High Temperature 51 in 2020 57 in 1990
12th *Coldest High Temperature 49 in 2020 60 in 1919
*Most recently tied May 5, 1907 for the 5th coldest high temperature on record in May
at Harrison
Additional notes:
11th The daily average of 44.5 was the 6th coldest daily average temperature in May
at Harrison
.Monthly Rainfall...
Rainfall was above average for the second May in a row. It was the wettest May in five
years (since 2015). There were 16 days with measurable rainfall, which was the most in
May since 2015.
.Daily Rainfall Records Tied or Broken During the Month...
None.
.Miscellaneous Phenomena...
None.
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