337
CDUS41 KLWX 202126
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
526 PM EDT SUN SEP 20 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 20 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 81 2:42 PM 91 1965 78 3 80
MINIMUM 69 7:39 AM 40 1979 56 13 66
AVERAGE 75 67 8 73
PRECIPITATION (IN)
TODAY 0.07 0.87 1966 0.14 -0.07 0.00
MONTH TO DATE 1.63 2.61 -0.98 1.05
SINCE SEP 1 1.63 2.61 -0.98 1.05
SINCE JAN 1 31.03 31.83 -0.80 25.69
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 2 -2 0
MONTH TO DATE 0 14 -14 7
SINCE SEP 1 0 14 -14 7
SINCE JUL 1 0 15 -15 9
COOLING
TODAY 10 4 6 8
MONTH TO DATE 186 124 62 96
SINCE SEP 1 186 124 62 96
SINCE JAN 1 1466 1180 286 1244
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 8.2
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 8:00 AM
LOWEST 67 2:00 PM
AVERAGE 77
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 92 1965
1998
MINIMUM TEMPERATURE (F) 56 33 1962
SUNRISE AND SUNSET
SEPTEMBER 20 2026.....SUNRISE 6:56 AM EDT SUNSET 7:10 PM EDT
SEPTEMBER 21 2026.....SUNRISE 6:57 AM EDT SUNSET 7:08 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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