790
CDUS41 KLWX 050623
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
223 AM EDT WED AUG 05 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 4 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 4:01 PM 99 2002 87 0 85
MINIMUM 70 5:49 AM 51 1976 67 3 56
AVERAGE 79 77 2 71
PRECIPITATION (IN)
YESTERDAY 0.00 1.87 2020 0.12 -0.12 0.00
MONTH TO DATE 0.41 0.48 -0.07 0.12
SINCE JUN 1 10.04 8.93 1.11 9.99
SINCE JAN 1 24.96 26.17 -1.21 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 14 12 2 6
MONTH TO DATE 55 48 7 22
SINCE JUN 1 768 664 104 820
SINCE JAN 1 941 770 171 938
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 6.5
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 11:00 PM
LOWEST 48 3:00 PM
AVERAGE 64
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 99 1995
MINIMUM TEMPERATURE (F) 66 54 1985
1992
SUNRISE AND SUNSET
AUGUST 5 2026........SUNRISE 6:14 AM EDT SUNSET 8:17 PM EDT
AUGUST 6 2026........SUNRISE 6:15 AM EDT SUNSET 8:16 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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