106
CDUS41 KLWX 120622
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
222 AM EDT WED AUG 12 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 11 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 4:16 PM 99 2021 87 0 86
MINIMUM 69 5:46 AM 47 1972 66 3 61
AVERAGE 78 76 2 74
PRECIPITATION (IN)
YESTERDAY 0.12 4.68 1984 0.11 0.01 0.00
MONTH TO DATE 2.17 1.30 0.87 0.12
SINCE JUN 1 11.80 9.75 2.05 9.99
SINCE JAN 1 26.72 26.99 -0.27 23.91
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 13 11 2 9
MONTH TO DATE 161 131 30 74
SINCE JUN 1 874 747 127 872
SINCE JAN 1 1047 853 194 990
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WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 6.0
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 12:00 AM
LOWEST 48 5:00 PM
AVERAGE 72
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 100 2021
MINIMUM TEMPERATURE (F) 66 51 1962
SUNRISE AND SUNSET
AUGUST 12 2026........SUNRISE 6:21 AM EDT SUNSET 8:08 PM EDT
AUGUST 13 2026........SUNRISE 6:22 AM EDT SUNSET 8:07 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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