564
CDUS41 KLWX 280639
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
239 AM EDT MON SEP 28 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 27 2026
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)
YESTERDAY
MAXIMUM 67 11:28 AM 96 1998 75 -8 77
MINIMUM 60 10:49 PM 35 1984 53 7 64
AVERAGE 64 64 0 71
PRECIPITATION (IN)
YESTERDAY 0.03 1.55 1985 0.14 -0.11 T
MONTH TO DATE 3.80 3.51 0.29 1.22
SINCE SEP 1 3.80 3.51 0.29 1.22
SINCE JAN 1 33.20 32.73 0.47 25.86
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 1 3 -2 0
MONTH TO DATE 21 31 -10 7
SINCE SEP 1 21 31 -10 7
SINCE JUL 1 21 32 -11 9
COOLING
YESTERDAY 0 2 -2 6
MONTH TO DATE 191 145 46 150
SINCE SEP 1 191 145 46 150
SINCE JAN 1 1471 1201 270 1298
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WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 12.3
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 4:00 PM
LOWEST 61 11:00 AM
AVERAGE 77
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 86 1998
2019
MINIMUM TEMPERATURE (F) 53 34 1989
SUNRISE AND SUNSET
SEPTEMBER 28 2026.....SUNRISE 7:03 AM EDT SUNSET 6:57 PM EDT
SEPTEMBER 29 2026.....SUNRISE 7:04 AM EDT SUNSET 6:55 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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