039
CDUS41 KLWX 240634
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
234 AM EDT WED SEP 24 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 23 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 85 3:51 PM 94 2019 77 8 68
MINIMUM 64 6:17 AM 33 1983 55 9 62
AVERAGE 75 66 9 65
PRECIPITATION (IN)
YESTERDAY 0.01 1.74 2003 0.12 -0.11 0.19
MONTH TO DATE 1.06 2.98 -1.92 0.83
SINCE SEP 1 1.06 2.98 -1.92 0.83
SINCE JAN 1 25.70 32.20 -6.50 26.61
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 SEP 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 2 -2 0
MONTH TO DATE 7 20 -13 11
SINCE SEP 1 7 20 -13 11
SINCE JUL 1 9 21 -12 13
COOLING
YESTERDAY 10 3 7 0
MONTH TO DATE 118 134 -16 97
SINCE SEP 1 118 134 -16 97
SINCE JAN 1 1266 1190 76 1511
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WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 6.0
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 5:00 AM
LOWEST 53 4:00 PM
AVERAGE 72
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 97 2010
MINIMUM TEMPERATURE (F) 55 30 1974
SUNRISE AND SUNSET
SEPTEMBER 24 2025.....SUNRISE 7:00 AM EDT SUNSET 7:03 PM EDT
SEPTEMBER 25 2025.....SUNRISE 7:00 AM EDT SUNSET 7:01 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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