Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 122129
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
529 PM EDT SAT JUL 12 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 12 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 90 12:00 PM 97 1986 88 2 80
MINIMUM 72 3:40 AM 47 2002 67 5 70
AVERAGE 81 77 4 75
PRECIPITATION (IN)
TODAY 0.00 2.61 1990 0.13 -0.13 0.68
MONTH TO DATE 1.17 1.62 -0.45 1.74
SINCE JUN 1 8.10 5.92 2.18 2.43
SINCE JAN 1 22.02 23.16 -1.14 19.73
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 0
SINCE JUN 1 15 13 2 0
SINCE JUL 1 0 0 0 0
COOLING
TODAY 16 12 4 10
MONTH TO DATE 172 142 30 197
SINCE JUN 1 493 380 113 551
SINCE JAN 1 611 486 125 734
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 4.3
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1:00 AM
LOWEST 67 4:00 PM
AVERAGE 84
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 97 1966
1986
MINIMUM TEMPERATURE (F) 67 52 1978
SUNRISE AND SUNSET
JULY 12 2025..........SUNRISE 5:55 AM EDT SUNSET 8:36 PM EDT
JULY 13 2025..........SUNRISE 5:55 AM EDT SUNSET 8:35 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$