861
CDUS41 KLWX 010622
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
222 AM EDT SAT AUG 01 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 31 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 88 3:59 PM 98 1999 88 0 92
MINIMUM 65 4:50 AM 50 1997 67 -2 73
AVERAGE 77 77 0 83
PRECIPITATION (IN)
YESTERDAY 0.00 1.87 1978 0.13 -0.13 0.29
MONTH TO DATE 5.34 4.15 1.19 2.94
SINCE JUN 1 9.63 8.45 1.18 9.87
SINCE JAN 1 24.55 25.69 -1.14 23.79
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 12 12 0 18
MONTH TO DATE 435 378 57 477
SINCE JUN 1 713 616 97 798
SINCE JAN 1 886 722 164 916
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WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 4.3
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 81 5:00 AM
LOWEST 39 4:00 PM
AVERAGE 60
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 100 1980
MINIMUM TEMPERATURE (F) 67 54 1997
SUNRISE AND SUNSET
AUGUST 1 2026........SUNRISE 6:11 AM EDT SUNSET 8:21 PM EDT
AUGUST 2 2026........SUNRISE 6:12 AM EDT SUNSET 8:20 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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