Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 042122
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
522 PM EDT THU SEP 04 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 4 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 87 12:34 PM 99 2023 83 4 77
MINIMUM 62 6:08 AM 48 1997 62 0 51
AVERAGE 75 73 2 64
PRECIPITATION (IN)
TODAY T 1.29 1996 0.12 -0.12 0.00
MONTH TO DATE T 0.49 -0.49 0.00
SINCE SEP 1 T 0.49 -0.49 0.00
SINCE JAN 1 24.64 29.71 -5.07 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 0 0 1
MONTH TO DATE 0 0 0 2
SINCE SEP 1 0 0 0 2
SINCE JUL 1 2 1 1 4
COOLING
TODAY 10 8 2 0
MONTH TO DATE 13 32 -19 15
SINCE SEP 1 13 32 -19 15
SINCE JAN 1 1161 1088 73 1429
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 10.4
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 6:00 AM
LOWEST 44 12:00 PM
AVERAGE 65
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 99 2023
MINIMUM TEMPERATURE (F) 62 42 1997
SUNRISE AND SUNSET
SEPTEMBER 4 2025.....SUNRISE 6:42 AM EDT SUNSET 7:35 PM EDT
SEPTEMBER 5 2025.....SUNRISE 6:43 AM EDT SUNSET 7:33 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$