003
CDUS41 KLWX 302125
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
525 PM EDT TUE SEP 30 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 30 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 75 3:26 PM 92 1986 74 1 66
MINIMUM 66 7:17 AM 35 1993 52 14 64
AVERAGE 71 63 8 65
PRECIPITATION (IN)
TODAY T 4.74 2010 0.15 -0.15 0.26
MONTH TO DATE 1.22 3.94 -2.72 3.27
SINCE SEP 1 1.22 3.94 -2.72 3.27
SINCE JAN 1 25.86 33.16 -7.30 29.05
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 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
TODAY 0 4 -4 0
MONTH TO DATE 7 43 -36 12
SINCE SEP 1 7 43 -36 12
SINCE JUL 1 9 44 -35 14
COOLING
TODAY 6 2 4 0
MONTH TO DATE 170 152 18 137
SINCE SEP 1 170 152 18 137
SINCE JAN 1 1318 1208 110 1551
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 5.8
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 1:00 AM
LOWEST 50 4:00 PM
AVERAGE 69
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 90 1986
MINIMUM TEMPERATURE (F) 52 31 1993
SUNRISE AND SUNSET
SEPTEMBER 30 2025.....SUNRISE 7:05 AM EDT SUNSET 6:54 PM EDT
OCTOBER 1 2025.......SUNRISE 7:06 AM EDT SUNSET 6:52 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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