841
CDUS41 KLWX 270624
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
224 AM EDT SAT SEP 27 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 26 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 3:00 PM 93 2007 75 9 79
MINIMUM 64 10:59 PM 38 1964 54 10 70
1983
AVERAGE 74 65 9 75
PRECIPITATION (IN)
YESTERDAY 0.00 2.15 1975 0.13 -0.13 1.69
MONTH TO DATE 1.22 3.37 -2.15 2.80
SINCE SEP 1 1.22 3.37 -2.15 2.80
SINCE JAN 1 25.86 32.59 -6.73 28.58
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 3 -3 0
MONTH TO DATE 7 28 -21 12
SINCE SEP 1 7 28 -21 12
SINCE JUL 1 9 29 -20 14
COOLING
YESTERDAY 9 3 6 10
MONTH TO DATE 144 143 1 111
SINCE SEP 1 144 143 1 111
SINCE JAN 1 1292 1199 93 1525
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NW (320)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 4.2
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 5:00 AM
LOWEST 44 3:00 PM
AVERAGE 67
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 96 1998
MINIMUM TEMPERATURE (F) 53 35 1984
SUNRISE AND SUNSET
SEPTEMBER 27 2025.....SUNRISE 7:02 AM EDT SUNSET 6:58 PM EDT
SEPTEMBER 28 2025.....SUNRISE 7:03 AM EDT SUNSET 6:57 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