257
CDUS41 KLWX 060623
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
223 AM EDT SAT SEP 06 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 5 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 90 3:34 PM 99 2023 83 7 78
MINIMUM 61 4:04 AM 42 1997 62 -1 52
AVERAGE 76 72 4 65
PRECIPITATION (IN)
YESTERDAY 0.00 3.78 1979 0.12 -0.12 0.00
MONTH TO DATE T 0.61 -0.61 0.00
SINCE SEP 1 T 0.61 -0.61 0.00
SINCE JAN 1 24.64 29.83 -5.19 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 0 0 0
MONTH TO DATE 0 0 0 2
SINCE SEP 1 0 0 0 2
SINCE JUL 1 2 1 1 4
COOLING
YESTERDAY 11 8 3 0
MONTH TO DATE 24 40 -16 15
SINCE SEP 1 24 40 -16 15
SINCE JAN 1 1172 1096 76 1429
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 2:00 AM
LOWEST 38 2:00 PM
AVERAGE 68
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 100 2023
MINIMUM TEMPERATURE (F) 61 45 1972
1976
SUNRISE AND SUNSET
SEPTEMBER 6 2025.....SUNRISE 6:43 AM EDT SUNSET 7:32 PM EDT
SEPTEMBER 7 2025.....SUNRISE 6:44 AM EDT SUNSET 7:30 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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