National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2025-07-30 06:24 UTC
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432
CDUS41 KLWX 300624
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
224 AM EDT WED JUL 30 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 29 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 95 2:42 PM 103 2011 88 7 96
MINIMUM 70 5:17 AM 52 2014 67 3 69
AVERAGE 83 77 6 83
PRECIPITATION (IN)
YESTERDAY 0.00 0.92 2001 0.12 -0.12 0.00
MONTH TO DATE 2.65 3.89 -1.24 2.54
SINCE JUN 1 9.58 8.19 1.39 3.23
SINCE JAN 1 23.50 25.43 -1.93 20.53
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 18 12 6 18
MONTH TO DATE 440 346 94 462
SINCE JUN 1 761 584 177 816
SINCE JAN 1 879 690 189 999
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 2.9
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1:00 AM
LOWEST 46 2:00 PM
AVERAGE 72
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 98 1988
MINIMUM TEMPERATURE (F) 67 48 2014
SUNRISE AND SUNSET
JULY 30 2025..........SUNRISE 6:09 AM EDT SUNSET 8:23 PM EDT
JULY 31 2025..........SUNRISE 6:10 AM EDT SUNSET 8:22 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$