Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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907
CDUS41 KLWX 162121
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
521 PM EDT WED JUL 16 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 16 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 90 2:58 PM 104 1988 88 2 101
MINIMUM 73 3:59 AM 57 1966 67 6 73
1967
1991
AVERAGE 82 78 4 87
PRECIPITATION (IN)
TODAY 0.00 1.65 1989 0.14 -0.14 0.00
MONTH TO DATE 1.30 2.18 -0.88 1.74
SINCE JUN 1 8.23 6.48 1.75 2.43
SINCE JAN 1 22.15 23.72 -1.57 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 17 12 5 22
MONTH TO DATE 237 190 47 280
SINCE JUN 1 558 428 130 634
SINCE JAN 1 676 534 142 817
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 6.4
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 4:00 AM
LOWEST 63 2:00 PM
AVERAGE 80
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 100 1988
1997
MINIMUM TEMPERATURE (F) 67 55 1976
2014
SUNRISE AND SUNSET
JULY 16 2025..........SUNRISE 5:58 AM EDT SUNSET 8:34 PM EDT
JULY 17 2025..........SUNRISE 5:58 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.
$$