Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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662
CDUS41 KLWX 060625
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
225 AM EDT WED AUG 06 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 5 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 82 2:09 PM 99 1995 87 -5 97
MINIMUM 63 4:17 AM 54 1985 66 -3 69
1992
AVERAGE 73 77 -4 83
PRECIPITATION (IN)
YESTERDAY 0.00 1.78 1990 0.12 -0.12 0.00
MONTH TO DATE 0.12 0.60 -0.48 0.33
SINCE JUN 1 9.99 9.05 0.94 3.68
SINCE JAN 1 23.91 26.29 -2.38 20.98
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 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
YESTERDAY 8 12 -4 18
MONTH TO DATE 30 60 -30 95
SINCE JUN 1 828 676 152 948
SINCE JAN 1 946 782 164 1131
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 3.2
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 6:00 AM
LOWEST 51 12:00 PM
AVERAGE 71
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 96 1977
2007
2024
MINIMUM TEMPERATURE (F) 66 50 1966
SUNRISE AND SUNSET
AUGUST 6 2025........SUNRISE 6:15 AM EDT SUNSET 8:15 PM EDT
AUGUST 7 2025........SUNRISE 6:16 AM EDT SUNSET 8:14 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$