992
CDUS41 KLWX 122125
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
525 PM EDT SAT SEP 12 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 12 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 80 3:44 PM 95 1998 81 -1 84
2019
MINIMUM 66 12:23 AM 40 1967 60 6 56
AVERAGE 73 70 3 70
PRECIPITATION (IN)
TODAY T 1.18 1965 0.13 -0.13 0.00
MONTH TO DATE 1.39 1.48 -0.09 0.18
SINCE SEP 1 1.39 1.48 -0.09 0.18
SINCE JAN 1 30.79 30.70 0.09 24.82
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 1 -1 0
MONTH TO DATE 0 3 -3 6
SINCE SEP 1 0 3 -3 6
SINCE JUL 1 0 4 -4 8
COOLING
TODAY 8 6 2 5
MONTH TO DATE 142 86 56 50
SINCE SEP 1 142 86 56 50
SINCE JAN 1 1422 1142 280 1198
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SE (130)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 2:00 AM
LOWEST 69 11:00 AM
AVERAGE 81
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 94 1974
MINIMUM TEMPERATURE (F) 59 43 1985
SUNRISE AND SUNSET
SEPTEMBER 12 2026.....SUNRISE 6:49 AM EDT SUNSET 7:23 PM EDT
SEPTEMBER 13 2026.....SUNRISE 6:49 AM EDT SUNSET 7:21 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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