208
CDUS41 KLWX 112128
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
528 PM EDT SUN MAY 11 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 11 2025
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 80 3:54 PM 90 1993 74 6 67
MINIMUM 48 5:15 AM 29 1966 52 -4 45
AVERAGE 64 63 1 56
PRECIPITATION (IN)
TODAY 0.00 3.73 2008 0.15 -0.15 0.39
MONTH TO DATE 1.43 1.59 -0.16 1.99
SINCE MAR 1 4.86 8.56 -3.70 7.62
SINCE JAN 1 9.28 14.11 -4.83 15.07
SNOWFALL (IN)
TODAY 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
TODAY 1 4 -3 9
MONTH TO DATE 18 57 -39 32
SINCE MAR 1 709 1024 -315 711
SINCE JUL 1 4031 4534 -503 3675
COOLING
TODAY 0 2 -2 0
MONTH TO DATE 29 18 11 42
SINCE MAR 1 76 40 36 86
SINCE JAN 1 76 40 36 89
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 2.4
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 5:00 AM
LOWEST 30 12:00 PM
AVERAGE 60
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 90 2018
MINIMUM TEMPERATURE (F) 52 34 1969
SUNRISE AND SUNSET
MAY 11 2025...........SUNRISE 6:01 AM EDT SUNSET 8:12 PM EDT
MAY 12 2025...........SUNRISE 6:00 AM EDT SUNSET 8:13 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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