503
CDUS41 KLWX 160622
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
222 AM EDT SUN AUG 16 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 15 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 5:09 PM 102 1988 87 0 89
MINIMUM 71 5:55 AM 45 1964 66 5 69
AVERAGE 79 76 3 79
PRECIPITATION (IN)
YESTERDAY 0.00 2.18 2019 0.11 -0.11 0.27
MONTH TO DATE 2.17 1.74 0.43 0.59
SINCE JUN 1 11.80 10.19 1.61 10.46
SINCE JAN 1 26.72 27.43 -0.71 24.38
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 11 3 14
MONTH TO DATE 217 175 42 132
SINCE JUN 1 930 791 139 930
SINCE JAN 1 1103 897 206 1048
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WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 4.2
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 5:00 AM
LOWEST 48 12:00 PM
AVERAGE 71
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 100 1997
MINIMUM TEMPERATURE (F) 65 46 1979
SUNRISE AND SUNSET
AUGUST 16 2026........SUNRISE 6:24 AM EDT SUNSET 8:03 PM EDT
AUGUST 17 2026........SUNRISE 6:25 AM EDT SUNSET 8:02 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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