507
CDUS41 KLWX 090629
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
229 AM EDT THU OCT 09 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 8 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 73 2:58 PM 92 2007 71 2 69
MINIMUM 56 11:55 PM 30 2001 48 8 47
AVERAGE 65 60 5 58
PRECIPITATION (IN)
YESTERDAY 0.14 2.79 2005 0.13 0.01 0.00
MONTH TO DATE 0.16 1.01 -0.85 0.13
SINCE SEP 1 1.38 4.95 -3.57 3.40
SINCE JAN 1 26.02 34.17 -8.15 29.18
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 7 -7 7
MONTH TO DATE 17 44 -27 10
SINCE SEP 1 24 89 -65 22
SINCE JUL 1 26 90 -64 24
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 12 13 -1 14
SINCE SEP 1 182 165 17 151
SINCE JAN 1 1330 1221 109 1565
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 10.2
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 3:00 AM
LOWEST 36 5:00 PM
AVERAGE 67
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 94 2007
MINIMUM TEMPERATURE (F) 48 26 2001
SUNRISE AND SUNSET
OCTOBER 9 2025.......SUNRISE 7:14 AM EDT SUNSET 6:40 PM EDT
OCTOBER 10 2025.......SUNRISE 7:15 AM EDT SUNSET 6:38 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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