698
CDUS41 KLWX 310624
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
224 AM EDT MON AUG 31 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 30 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 87 4:30 PM 99 1991 85 2 77
MINIMUM 70 11:59 PM 41 1986 63 7 51
AVERAGE 79 74 5 64
PRECIPITATION (IN)
YESTERDAY 0.55 1.21 1978 0.11 0.44 0.00
MONTH TO DATE 4.85 3.42 1.43 0.85
SINCE JUN 1 14.48 11.87 2.61 10.72
SINCE JAN 1 29.40 29.11 0.29 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 1
MONTH TO DATE 0 0 0 1
SINCE JUN 1 1 13 -12 16
SINCE JUL 1 0 0 0 1
COOLING
YESTERDAY 14 9 5 0
MONTH TO DATE 381 326 55 232
SINCE JUN 1 1094 942 152 1030
SINCE JAN 1 1267 1048 219 1148
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WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 10:00 PM
LOWEST 57 3:00 PM
AVERAGE 77
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 98 1991
MINIMUM TEMPERATURE (F) 63 43 1976
SUNRISE AND SUNSET
AUGUST 31 2026........SUNRISE 6:38 AM EDT SUNSET 7:42 PM EDT
SEPTEMBER 1 2026.....SUNRISE 6:39 AM EDT SUNSET 7:40 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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