512
CDUS41 KLWX 290628
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 AM EDT TUE JUL 29 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 28 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 93 4:07 PM 99 1993 88 5 91
MINIMUM 72 11:56 PM 47 1977 67 5 61
AVERAGE 83 77 6 76
PRECIPITATION (IN)
YESTERDAY 0.00 1.65 2000 0.13 -0.13 0.00
MONTH TO DATE 2.65 3.77 -1.12 2.54
SINCE JUN 1 9.58 8.07 1.51 3.23
SINCE JAN 1 23.50 25.31 -1.81 20.53
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 15 13 2 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 18 12 6 11
MONTH TO DATE 422 334 88 444
SINCE JUN 1 743 572 171 798
SINCE JAN 1 861 678 183 981
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WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 5.2
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 12:00 AM
LOWEST 47 3:00 PM
AVERAGE 72
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 103 2011
MINIMUM TEMPERATURE (F) 67 52 2014
SUNRISE AND SUNSET
JULY 29 2025..........SUNRISE 6:08 AM EDT SUNSET 8:24 PM EDT
JULY 30 2025..........SUNRISE 6:09 AM EDT SUNSET 8:23 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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