694
CDUS41 KLWX 050627
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EDT TUE AUG 05 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 4 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 85 3:51 PM 99 2002 87 -2 89
MINIMUM 56 3:42 AM 51 1976 67 -11 72
AVERAGE 71 77 -6 81
PRECIPITATION (IN)
YESTERDAY 0.00 1.87 2020 0.12 -0.12 0.01
MONTH TO DATE 0.12 0.48 -0.36 0.33
SINCE JUN 1 9.99 8.93 1.06 3.68
SINCE JAN 1 23.91 26.17 -2.26 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 6 12 -6 16
MONTH TO DATE 22 48 -26 77
SINCE JUN 1 820 664 156 930
SINCE JAN 1 938 770 168 1113
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WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 3.5
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 2:00 AM
LOWEST 37 5:00 PM
AVERAGE 67
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 99 1995
MINIMUM TEMPERATURE (F) 66 54 1985
1992
SUNRISE AND SUNSET
AUGUST 5 2025........SUNRISE 6:15 AM EDT SUNSET 8:16 PM EDT
AUGUST 6 2025........SUNRISE 6:15 AM EDT SUNSET 8:15 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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