454
CDUS41 KLWX 310626
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
226 AM EDT SUN MAY 31 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 30 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 73 4:14 PM 95 1987 78 -5 79
1991
2006
MINIMUM 53 11:36 PM 38 1996 57 -4 57
AVERAGE 63 68 -5 68
PRECIPITATION (IN)
YESTERDAY 0.00 2.65 1960 0.15 -0.15 0.55
MONTH TO DATE 4.60 4.57 0.03 5.80
SINCE MAR 1 9.12 11.54 -2.42 9.23
SINCE JAN 1 14.92 17.09 -2.17 13.65
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 1.0 4.0 -3.0 0.0
SINCE JUL 1 13.6 21.0 -7.4 15.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 2 2 0 0
MONTH TO DATE 128 114 14 74
SINCE MAR 1 778 1081 -303 765
SINCE JUL 1 4407 4591 -184 4087
COOLING
YESTERDAY 0 4 -4 3
MONTH TO DATE 87 79 8 71
SINCE MAR 1 173 101 72 118
SINCE JAN 1 173 101 72 118
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WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 9.6
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 2:00 AM
LOWEST 32 11:00 AM
AVERAGE 58
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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 2026...........SUNRISE 5:47 AM EDT SUNSET 8:29 PM EDT
JUNE 1 2026..........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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