Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 222129
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
529 PM EDT FRI AUG 22 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 22 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 84 2:32 PM 101 1983 86 -2 78
MINIMUM 65 1:20 AM 49 2024 65 0 49
AVERAGE 75 75 0 64
PRECIPITATION (IN)
TODAY 0.00 0.94 2009 0.11 -0.11 0.00
MONTH TO DATE 0.85 2.49 -1.64 3.05
SINCE JUN 1 10.72 10.94 -0.22 6.40
SINCE JAN 1 24.64 28.18 -3.54 23.70
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 1
MONTH TO DATE 0 0 0 2
SINCE JUN 1 15 13 2 2
SINCE JUL 1 0 0 0 2
COOLING
TODAY 10 10 0 0
MONTH TO DATE 202 249 -47 273
SINCE JUN 1 1000 865 135 1126
SINCE JAN 1 1118 971 147 1309
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 4.3
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1:00 AM
LOWEST 40 3:00 PM
AVERAGE 67
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 96 1998
MINIMUM TEMPERATURE (F) 65 47 1981
SUNRISE AND SUNSET
AUGUST 22 2025........SUNRISE 6:30 AM EDT SUNSET 7:55 PM EDT
AUGUST 23 2025........SUNRISE 6:31 AM EDT SUNSET 7:53 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$