433
CDUS41 KLWX 312126
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
526 PM EDT MON AUG 31 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 31 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 86 1:04 PM 98 1991 84 2 79
MINIMUM 69 4:41 AM 43 1976 63 6 48
AVERAGE 78 74 4 64
PRECIPITATION (IN)
TODAY T 3.21 1975 0.11 -0.11 0.00
MONTH TO DATE 4.85 3.53 1.32 0.85
SINCE JUN 1 14.48 11.98 2.50 10.72
SINCE JAN 1 29.40 29.22 0.18 24.64
SNOWFALL (IN)
TODAY 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
TODAY 0 0 0 1
MONTH TO DATE 0 0 0 2
SINCE JUN 1 1 13 -12 17
SINCE JUL 1 0 0 0 2
COOLING
TODAY 13 9 4 0
MONTH TO DATE 394 334 60 232
SINCE JUN 1 1107 950 157 1030
SINCE JAN 1 1280 1056 224 1148
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 3.0
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 1:00 AM
LOWEST 61 1:00 PM
AVERAGE 81
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 98 1962
1980
MINIMUM TEMPERATURE (F) 63 49 1970
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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