Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 132127
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
527 PM EDT WED AUG 13 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 13 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 86 2:28 PM 99 2016 87 -1 85
2021
MINIMUM 73 5:53 AM 50 1964 66 7 62
AVERAGE 80 76 4 74
PRECIPITATION (IN)
TODAY 0.11 1.48 2003 0.11 0.00 0.00
MONTH TO DATE 0.23 1.52 -1.29 1.97
SINCE JUN 1 10.10 9.97 0.13 5.32
SINCE JAN 1 24.02 27.21 -3.19 22.62
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 15 11 4 9
MONTH TO DATE 103 153 -50 203
SINCE JUN 1 901 769 132 1056
SINCE JAN 1 1019 875 144 1239
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 2.1
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 4:00 AM
LOWEST 67 1:00 PM
AVERAGE 84
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 100 1985
MINIMUM TEMPERATURE (F) 66 49 1983
SUNRISE AND SUNSET
AUGUST 13 2025........SUNRISE 6:22 AM EDT SUNSET 8:07 PM EDT
AUGUST 14 2025........SUNRISE 6:23 AM EDT SUNSET 8:05 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$