933
CDUS41 KLWX 160628
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 AM EDT TUE SEP 16 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 15 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 84 2:31 PM 95 1993 80 4 82
1998
MINIMUM 59 6:05 AM 38 1985 58 1 55
AVERAGE 72 69 3 69
PRECIPITATION (IN)
YESTERDAY 0.00 1.06 1981 0.14 -0.14 0.00
MONTH TO DATE 0.18 1.89 -1.71 T
SINCE SEP 1 0.18 1.89 -1.71 T
SINCE JAN 1 24.82 31.11 -6.29 25.78
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 1 -1 0
MONTH TO DATE 6 6 0 11
SINCE SEP 1 6 6 0 11
SINCE JUL 1 8 7 1 13
COOLING
YESTERDAY 7 5 2 4
MONTH TO DATE 69 102 -33 49
SINCE SEP 1 69 102 -33 49
SINCE JAN 1 1217 1158 59 1463
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 6.0
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 3:00 AM
LOWEST 38 3:00 PM
AVERAGE 67
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 97 1991
MINIMUM TEMPERATURE (F) 58 37 1984
SUNRISE AND SUNSET
SEPTEMBER 16 2025.....SUNRISE 6:52 AM EDT SUNSET 7:16 PM EDT
SEPTEMBER 17 2025.....SUNRISE 6:53 AM EDT SUNSET 7:14 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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