Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 272123
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
523 PM EDT WED AUG 27 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 27 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 79 2:56 PM 100 1987 85 -6 93
MINIMUM 52 5:55 AM 46 1969 64 -12 66
AVERAGE 66 74 -8 80
PRECIPITATION (IN)
TODAY 0.00 1.98 1971 0.12 -0.12 0.00
MONTH TO DATE 0.85 3.09 -2.24 3.07
SINCE JUN 1 10.72 11.54 -0.82 6.42
SINCE JAN 1 24.64 28.78 -4.14 23.72
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 JUN 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 2
SINCE JUN 1 15 13 2 2
SINCE JUL 1 0 0 0 2
COOLING
TODAY 1 10 -9 15
MONTH TO DATE 228 299 -71 321
SINCE JUN 1 1026 915 111 1174
SINCE JAN 1 1144 1021 123 1357
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 7.4
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 6:00 AM
LOWEST 31 2:00 PM
AVERAGE 59
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 85 99 2024
MINIMUM TEMPERATURE (F) 64 44 1986
SUNRISE AND SUNSET
AUGUST 27 2025........SUNRISE 6:34 AM EDT SUNSET 7:47 PM EDT
AUGUST 28 2025........SUNRISE 6:35 AM EDT SUNSET 7:46 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$