547
CDUS41 KLWX 240621
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
221 AM EDT MON AUG 24 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 23 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 84 3:52 PM 96 1998 86 -2 83
MINIMUM 63 11:59 PM 47 1981 65 -2 61
AVERAGE 74 75 -1 72
PRECIPITATION (IN)
YESTERDAY 0.00 1.60 2001 0.12 -0.12 0.00
MONTH TO DATE 4.29 2.61 1.68 0.85
SINCE JUN 1 13.92 11.06 2.86 10.72
SINCE JAN 1 28.84 28.30 0.54 24.64
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 1 13 -12 15
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 9 10 -1 7
MONTH TO DATE 309 259 50 208
SINCE JUN 1 1022 875 147 1006
SINCE JAN 1 1195 981 214 1124
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WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 6:00 AM
LOWEST 33 4:00 PM
AVERAGE 67
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 97 1998
MINIMUM TEMPERATURE (F) 64 46 1971
1987
SUNRISE AND SUNSET
AUGUST 24 2026........SUNRISE 6:32 AM EDT SUNSET 7:52 PM EDT
AUGUST 25 2026........SUNRISE 6:32 AM EDT SUNSET 7:51 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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