Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 152128
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
528 PM EDT TUE JUL 15 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 15 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 88 2:58 PM 99 2024 88 0 99
MINIMUM 71 4:10 AM 53 1981 67 4 75
1987
AVERAGE 80 78 2 87
PRECIPITATION (IN)
TODAY 0.00 1.01 2005 0.14 -0.14 0.00
MONTH TO DATE 1.30 2.04 -0.74 1.74
SINCE JUN 1 8.23 6.34 1.89 2.43
SINCE JAN 1 22.15 23.58 -1.43 19.73
SNOWFALL (IN)
TODAY 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
TODAY 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
TODAY 15 12 3 22
MONTH TO DATE 220 178 42 258
SINCE JUN 1 541 416 125 612
SINCE JAN 1 659 522 137 795
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 3.6
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 12:00 AM
LOWEST 57 3:00 PM
AVERAGE 79
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 104 1988
MINIMUM TEMPERATURE (F) 67 57 1966
1967
1991
SUNRISE AND SUNSET
JULY 15 2025..........SUNRISE 5:57 AM EDT SUNSET 8:34 PM EDT
JULY 16 2025..........SUNRISE 5:58 AM EDT SUNSET 8:34 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$