063
CDUS41 KLWX 170625
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
225 AM EDT SUN AUG 17 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 16 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 89 3:49 PM 100 1997 87 2 89
MINIMUM 74 1:42 AM 46 1979 65 9 61
AVERAGE 82 76 6 75
PRECIPITATION (IN)
YESTERDAY 0.08 1.45 2003 0.10 -0.02 0.00
MONTH TO DATE 0.67 1.84 -1.17 1.97
SINCE JUN 1 10.54 10.29 0.25 5.32
SINCE JAN 1 24.46 27.53 -3.07 22.62
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 17 11 6 10
MONTH TO DATE 149 186 -37 232
SINCE JUN 1 947 802 145 1085
SINCE JAN 1 1065 908 157 1268
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WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 4.7
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 3:00 AM
LOWEST 50 2:00 PM
AVERAGE 72
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 101 1988
MINIMUM TEMPERATURE (F) 65 44 1979
SUNRISE AND SUNSET
AUGUST 17 2025........SUNRISE 6:25 AM EDT SUNSET 8:01 PM EDT
AUGUST 18 2025........SUNRISE 6:26 AM EDT SUNSET 8:00 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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