803
CDUS41 KLWX 092124
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
524 PM EDT WED SEP 09 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 9 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 89 3:30 PM 98 2016 82 7 78
MINIMUM 66 6:04 AM 40 1986 61 5 46
AVERAGE 78 71 7 62
PRECIPITATION (IN)
TODAY 0.00 1.40 2018 0.13 -0.13 0.00
MONTH TO DATE 0.83 1.10 -0.27 0.03
SINCE SEP 1 0.83 1.10 -0.27 0.03
SINCE JAN 1 30.23 30.32 -0.09 24.67
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 0 0 3
MONTH TO DATE 0 0 0 6
SINCE SEP 1 0 0 0 6
SINCE JUL 1 0 1 -1 8
COOLING
TODAY 13 7 6 0
MONTH TO DATE 111 68 43 38
SINCE SEP 1 111 68 43 38
SINCE JAN 1 1391 1124 267 1186
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 9.0
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 3:00 AM
LOWEST 47 4:00 PM
AVERAGE 66
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 99 1983
MINIMUM TEMPERATURE (F) 60 43 1981
SUNRISE AND SUNSET
SEPTEMBER 9 2026.....SUNRISE 6:46 AM EDT SUNSET 7:28 PM EDT
SEPTEMBER 10 2026.....SUNRISE 6:47 AM EDT SUNSET 7:26 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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