773
CDUS41 KLWX 040630
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
230 AM EDT THU SEP 04 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 3 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 83 3:25 PM 99 2023 84 -1 75
MINIMUM 51 6:06 AM 45 1967 62 -11 53
AVERAGE 67 73 -6 64
PRECIPITATION (IN)
YESTERDAY 0.00 1.47 1969 0.13 -0.13 0.00
MONTH TO DATE 0.00 0.37 -0.37 0.00
SINCE SEP 1 0.00 0.37 -0.37 0.00
SINCE JAN 1 24.64 29.59 -4.95 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 1
MONTH TO DATE 0 0 0 1
SINCE SEP 1 0 0 0 1
SINCE JUL 1 2 1 1 3
COOLING
YESTERDAY 2 8 -6 0
MONTH TO DATE 3 24 -21 15
SINCE SEP 1 3 24 -21 15
SINCE JAN 1 1151 1080 71 1429
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 4.1
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 34 3:00 PM
AVERAGE 67
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 99 2023
MINIMUM TEMPERATURE (F) 62 48 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page