752
CDUS41 KLWX 100630
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
230 AM EDT THU JUL 10 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 9 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 91 1:20 PM 99 1988 88 3 98
1993
MINIMUM 72 2:51 AM 48 1984 67 5 76
AVERAGE 82 77 5 87
PRECIPITATION (IN)
YESTERDAY 0.22 2.23 1970 0.13 0.09 0.00
MONTH TO DATE 0.84 1.22 -0.38 0.68
SINCE JUN 1 7.77 5.52 2.25 1.37
SINCE JAN 1 21.69 22.76 -1.07 18.67
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 JUN 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 0
SINCE JUN 1 15 13 2 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 17 12 5 22
MONTH TO DATE 127 106 21 152
SINCE JUN 1 448 344 104 506
SINCE JAN 1 566 450 116 689
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 4.1
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 7:00 PM
LOWEST 54 1:00 PM
AVERAGE 77
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 99 1988
1993
MINIMUM TEMPERATURE (F) 67 53 1963
SUNRISE AND SUNSET
JULY 10 2025..........SUNRISE 5:53 AM EDT SUNSET 8:37 PM EDT
JULY 11 2025..........SUNRISE 5:54 AM EDT SUNSET 8:36 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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