Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 310634
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
234 AM EDT SUN AUG 31 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 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 77 4:25 PM 99 1991 85 -8 75
MINIMUM 51 4:36 AM 41 1986 63 -12 70
AVERAGE 64 74 -10 73
PRECIPITATION (IN)
YESTERDAY 0.00 1.21 1978 0.11 -0.11 T
MONTH TO DATE 0.85 3.42 -2.57 4.99
SINCE JUN 1 10.72 11.87 -1.15 8.34
SINCE JAN 1 24.64 29.11 -4.47 25.64
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 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
YESTERDAY 1 0 1 0
MONTH TO DATE 1 0 1 2
SINCE JUN 1 16 13 3 2
SINCE JUL 1 1 0 1 2
COOLING
YESTERDAY 0 9 -9 8
MONTH TO DATE 232 326 -94 367
SINCE JUN 1 1030 942 88 1220
SINCE JAN 1 1148 1048 100 1403
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 5.3
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 75 11:00 PM
LOWEST 31 4:00 PM
AVERAGE 53
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 98 1991
MINIMUM TEMPERATURE (F) 63 43 1976
SUNRISE AND SUNSET
AUGUST 31 2025........SUNRISE 6:38 AM EDT SUNSET 7:41 PM EDT
SEPTEMBER 1 2025.....SUNRISE 6:39 AM EDT SUNSET 7:40 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$