899
CDUS41 KLWX 210622
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
222 AM EDT FRI AUG 21 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 20 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 89 2:13 PM 104 1983 86 3 82
MINIMUM 68 11:59 PM 47 1964 65 3 66
1976
1998
AVERAGE 79 76 3 74
PRECIPITATION (IN)
YESTERDAY 0.64 2.17 1963 0.11 0.53 0.01
MONTH TO DATE 4.17 2.28 1.89 0.84
SINCE JUN 1 13.80 10.73 3.07 10.71
SINCE JAN 1 28.72 27.97 0.75 24.63
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 14 10 4 9
MONTH TO DATE 283 229 54 188
SINCE JUN 1 996 845 151 986
SINCE JAN 1 1169 951 218 1104
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WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 7.6
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 91 4:00 PM
LOWEST 65 2:00 PM
AVERAGE 78
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 96 1962
MINIMUM TEMPERATURE (F) 65 47 1976
SUNRISE AND SUNSET
AUGUST 21 2026........SUNRISE 6:29 AM EDT SUNSET 7:56 PM EDT
AUGUST 22 2026........SUNRISE 6:30 AM EDT SUNSET 7:55 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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