341
CDUS41 KLWX 250633
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
233 AM EDT THU SEP 25 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 24 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 79 12:55 PM 97 2010 76 3 66
MINIMUM 63 5:16 AM 30 1974 55 8 61
AVERAGE 71 65 6 64
PRECIPITATION (IN)
YESTERDAY T 2.17 2001 0.13 -0.13 0.22
MONTH TO DATE 1.06 3.11 -2.05 1.05
SINCE SEP 1 1.06 3.11 -2.05 1.05
SINCE JAN 1 25.70 32.33 -6.63 26.83
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 1
MONTH TO DATE 7 22 -15 12
SINCE SEP 1 7 22 -15 12
SINCE JUL 1 9 23 -14 14
COOLING
YESTERDAY 6 3 3 0
MONTH TO DATE 124 137 -13 97
SINCE SEP 1 124 137 -13 97
SINCE JAN 1 1272 1193 79 1511
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WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION E (100)
AVERAGE WIND SPEED 3.5
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 2:00 AM
LOWEST 69 11:00 AM
AVERAGE 85
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 93 2010
MINIMUM TEMPERATURE (F) 54 33 1983
SUNRISE AND SUNSET
SEPTEMBER 25 2025.....SUNRISE 7:00 AM EDT SUNSET 7:01 PM EDT
SEPTEMBER 26 2025.....SUNRISE 7:01 AM EDT SUNSET 7:00 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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