449
CDUS41 KLWX 180639
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
239 AM EDT SUN MAY 18 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 17 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 86 4:32 PM 93 1960 75 11 71
MINIMUM 65 2:40 AM 30 1984 53 12 59
AVERAGE 76 64 12 65
PRECIPITATION (IN)
YESTERDAY 0.01 1.22 1970 0.16 -0.15 T
MONTH TO DATE 3.34 2.53 0.81 2.47
SINCE MAR 1 6.77 9.50 -2.73 8.10
SINCE JAN 1 11.19 15.05 -3.86 15.55
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 4 -4 0
MONTH TO DATE 20 81 -61 45
SINCE MAR 1 711 1048 -337 724
SINCE JUL 1 4033 4558 -525 3688
COOLING
YESTERDAY 11 3 8 0
MONTH TO DATE 63 32 31 44
SINCE MAR 1 110 54 56 88
SINCE JAN 1 110 54 56 91
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WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 11.5
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 3:00 AM
LOWEST 31 4:00 PM
AVERAGE 59
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 91 1987
MINIMUM TEMPERATURE (F) 54 33 1973
SUNRISE AND SUNSET
MAY 18 2025...........SUNRISE 5:54 AM EDT SUNSET 8:19 PM EDT
MAY 19 2025...........SUNRISE 5:54 AM EDT SUNSET 8:19 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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