455
CDUS41 KLWX 222121
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
521 PM EDT TUE JUL 22 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 22 2025
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 86 1:18 PM 105 2011 88 -2 86
MINIMUM 64 3:33 AM 50 1974 67 -3 71
AVERAGE 75 78 -3 79
PRECIPITATION (IN)
TODAY 0.00 2.25 1969 0.13 -0.13 0.07
MONTH TO DATE 1.83 3.00 -1.17 2.20
SINCE JUN 1 8.76 7.30 1.46 2.89
SINCE JAN 1 22.68 24.54 -1.86 20.19
SNOWFALL (IN)
TODAY 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
TODAY 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
TODAY 10 12 -2 14
MONTH TO DATE 322 262 60 368
SINCE JUN 1 643 500 143 722
SINCE JAN 1 761 606 155 905
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 4.2
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 3:00 AM
LOWEST 49 3:00 PM
AVERAGE 70
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 99 1991
2011
MINIMUM TEMPERATURE (F) 67 50 1977
1983
SUNRISE AND SUNSET
JULY 22 2025..........SUNRISE 6:02 AM EDT SUNSET 8:30 PM EDT
JULY 23 2025..........SUNRISE 6:03 AM EDT SUNSET 8:29 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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