589
CXUS51 KLWX 011318
CLMIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
918 AM EDT SAT JUN 01 2024
...............................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF MAY 2024...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2024
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..........................................................
TEMPERATURE (F)
RECORD
HIGH 97 05/29/1969
LOW 28 05/07/1970
HIGHEST 91 05/02 89 2 87
05/22
LOWEST 44 05/13 35 9 39
AVG. MAXIMUM 77.7 75.0 2.7 74.6
AVG. MINIMUM 57.5 53.0 4.5 49.6
MEAN 67.6 64.0 3.6 62.1
DAYS MAX >= 90 2 1.4 0.6 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.2 -0.2 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 10.26 2009
MINIMUM 0.34 2007
TOTALS 4.22 4.72 -0.50 1.48
DAILY AVG. 0.14 0.15 -0.01 0.05
DAYS >= .01 16 12.7 3.3 8
DAYS >= .10 10 8.0 2.0 4
DAYS >= .50 3 3.6 -0.6 0
DAYS >= 1.00 0 0.9 -0.9 0
GREATEST
24 HR. TOTAL 1.21 05/03 TO 05/04 1.03
STORM TOTAL 0.84 0.43
(MM/DD(HH))
SNOWFALL (INCHES)
RECORDS
TOTAL T 1963
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 11.7 21.0 -9.3 MM
DAYS >= TRACE 0 0.0 0.0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0
DEGREE DAYS
HEATING TOTAL 48 115 -67 110
SINCE 7/1 3691 4593 -902 MM
COOLING TOTAL 136 84 52 29
SINCE 1/1 183 106 77 MM
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WIND (MPH)
AVERAGE WIND SPEED 5.3
HIGHEST WIND SPEED/DIRECTION 33/300
33/300
HIGHEST GUST SPEED/DIRECTION 45/290
SKY COVER
AVERAGE SKY COVER 0.65
AVERAGE RH (PERCENT) 71
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 7 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 8
LIGHT RAIN 19 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 1
HAZE 5
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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