120
CDUS41 KLWX 170624
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
224 AM EDT THU JUL 17 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 16 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 2:58 PM 104 1988 88 2 101
MINIMUM 71 11:57 PM 57 1966 67 4 73
1967
1991
AVERAGE 81 78 3 87
PRECIPITATION (IN)
YESTERDAY 0.49 1.65 1989 0.14 0.35 0.00
MONTH TO DATE 1.79 2.18 -0.39 1.74
SINCE JUN 1 8.72 6.48 2.24 2.43
SINCE JAN 1 22.64 23.72 -1.08 19.73
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 MM
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 16 12 4 22
MONTH TO DATE 236 190 46 280
SINCE JUN 1 557 428 129 634
SINCE JAN 1 675 534 141 817
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 6.1
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 8:00 PM
LOWEST 63 2:00 PM
AVERAGE 80
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 100 1988
1997
MINIMUM TEMPERATURE (F) 67 55 1976
2014
SUNRISE AND SUNSET
JULY 17 2025..........SUNRISE 5:58 AM EDT SUNSET 8:33 PM EDT
JULY 18 2025..........SUNRISE 5:59 AM EDT SUNSET 8:33 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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