014
CDUS41 KLWX 220626
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
226 AM EDT MON SEP 22 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 21 2025
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)
YESTERDAY
MAXIMUM 74 12:04 PM 92 1965 77 -3 83
1998
MINIMUM 66 11:59 PM 33 1962 56 10 65
AVERAGE 70 67 3 74
PRECIPITATION (IN)
YESTERDAY 0.00 2.59 1979 0.13 -0.13 0.01
MONTH TO DATE 1.05 2.74 -1.69 0.62
SINCE SEP 1 1.05 2.74 -1.69 0.62
SINCE JAN 1 25.69 31.96 -6.27 26.40
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 0 2 -2 0
MONTH TO DATE 7 16 -9 11
SINCE SEP 1 7 16 -9 11
SINCE JUL 1 9 17 -8 13
COOLING
YESTERDAY 5 4 1 9
MONTH TO DATE 101 128 -27 93
SINCE SEP 1 101 128 -27 93
SINCE JAN 1 1249 1184 65 1507
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 3:00 AM
LOWEST 71 12:00 PM
AVERAGE 79
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 94 1970
1980
2010
MINIMUM TEMPERATURE (F) 56 35 1962
SUNRISE AND SUNSET
SEPTEMBER 22 2025.....SUNRISE 6:58 AM EDT SUNSET 7:06 PM EDT
SEPTEMBER 23 2025.....SUNRISE 6:59 AM EDT SUNSET 7:05 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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