Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 302122
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
522 PM EDT SAT AUG 30 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 30 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 76 3:59 PM 99 1991 85 -9 75
MINIMUM 51 4:36 AM 41 1986 63 -12 70
AVERAGE 64 74 -10 73
PRECIPITATION (IN)
TODAY 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)
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 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
TODAY 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 6.3
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 74 5:00 AM
LOWEST 31 4:00 PM
AVERAGE 53
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 98 1991
MINIMUM TEMPERATURE (F) 63 43 1976
SUNRISE AND SUNSET
AUGUST 30 2025........SUNRISE 6:37 AM EDT SUNSET 7:43 PM EDT
AUGUST 31 2025........SUNRISE 6:38 AM EDT SUNSET 7:41 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$