133
CDUS41 KLWX 162123
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
523 PM EDT TUE SEP 16 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 16 2025
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 75 11:38 AM 97 1991 79 -4 77
MINIMUM 62 3:59 PM 37 1984 58 4 60
AVERAGE 69 69 0 69
PRECIPITATION (IN)
TODAY 0.03 2.05 1999 0.15 -0.12 T
MONTH TO DATE 0.21 2.04 -1.83 T
SINCE SEP 1 0.21 2.04 -1.83 T
SINCE JAN 1 24.85 31.26 -6.41 25.78
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 6 7 -1 11
SINCE SEP 1 6 7 -1 11
SINCE JUL 1 8 8 0 13
COOLING
TODAY 4 5 -1 4
MONTH TO DATE 73 107 -34 53
SINCE SEP 1 73 107 -34 53
SINCE JAN 1 1221 1163 58 1467
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 10.4
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 4:00 PM
LOWEST 50 12:00 PM
AVERAGE 67
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 97 1991
MINIMUM TEMPERATURE (F) 58 35 1986
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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page