285
CDUS41 KLWX 310633
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
233 AM EDT SAT MAY 31 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 30 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 79 1:45 PM 95 1987 78 1 75
1991
2006
MINIMUM 57 11:41 PM 38 1996 57 0 56
AVERAGE 68 68 0 66
PRECIPITATION (IN)
YESTERDAY 0.55 2.65 1960 0.15 0.40 T
MONTH TO DATE 5.80 4.57 1.23 4.22
SINCE MAR 1 9.23 11.54 -2.31 9.85
SINCE JAN 1 13.65 17.09 -3.44 17.30
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE MAR 1 0.0 4.0 -4.0 T
SINCE JUL 1 15.5 21.0 -5.5 11.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 2 -2 0
MONTH TO DATE 74 114 -40 47
SINCE MAR 1 765 1081 -316 726
SINCE JUL 1 4087 4591 -504 3690
COOLING
YESTERDAY 3 4 -1 1
MONTH TO DATE 71 79 -8 136
SINCE MAR 1 118 101 17 180
SINCE JAN 1 118 101 17 183
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 5.3
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 4:00 AM
LOWEST 48 1:00 PM
AVERAGE 74
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 94 1991
2011
2022
MINIMUM TEMPERATURE (F) 57 37 1984
SUNRISE AND SUNSET
MAY 31 2025...........SUNRISE 5:46 AM EDT SUNSET 8:29 PM EDT
JUNE 1 2025..........SUNRISE 5:46 AM EDT SUNSET 8:30 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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