899
CDUS41 KLWX 212123
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
523 PM EDT FRI AUG 21 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 21 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 82 3:28 PM 96 1962 86 -4 73
MINIMUM 65 6:00 AM 47 1976 65 0 64
AVERAGE 74 75 -1 69
PRECIPITATION (IN)
TODAY 0.00 2.72 2018 0.10 -0.10 0.01
MONTH TO DATE 4.17 2.38 1.79 0.85
SINCE JUN 1 13.80 10.83 2.97 10.72
SINCE JAN 1 28.72 28.07 0.65 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 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 1 13 -12 15
SINCE JUL 1 0 0 0 0
COOLING
TODAY 9 10 -1 4
MONTH TO DATE 292 239 53 192
SINCE JUN 1 1005 855 150 990
SINCE JAN 1 1178 961 217 1108
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 7.2
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 81 2:00 AM
LOWEST 39 2:00 PM
AVERAGE 60
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 101 1983
MINIMUM TEMPERATURE (F) 65 49 2024
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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