140
CDUS41 KLWX 280628
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 AM EDT MON JUL 28 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 27 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 92 11:55 AM 98 1993 88 4 89
2023
MINIMUM 73 11:45 PM 52 1977 67 6 60
AVERAGE 83 77 6 75
PRECIPITATION (IN)
YESTERDAY 0.80 3.50 1994 0.12 0.68 0.00
MONTH TO DATE 2.65 3.64 -0.99 2.54
SINCE JUN 1 9.58 7.94 1.64 3.23
SINCE JAN 1 23.50 25.18 -1.68 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 10
MONTH TO DATE 404 322 82 433
SINCE JUN 1 725 560 165 787
SINCE JAN 1 843 666 177 970
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 4.8
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 2:00 AM
LOWEST 57 12:00 PM
AVERAGE 79
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 99 1993
MINIMUM TEMPERATURE (F) 67 47 1977
SUNRISE AND SUNSET
JULY 28 2025..........SUNRISE 6:07 AM EDT SUNSET 8:25 PM EDT
JULY 29 2025..........SUNRISE 6:08 AM EDT SUNSET 8:24 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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