568
CDUS41 KLWX 272140
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
540 PM EDT MON JUL 27 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 27 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 87 3:41 PM 98 1993 88 -1 92
2023
MINIMUM 68 5:32 AM 52 1977 67 1 73
AVERAGE 78 77 1 83
PRECIPITATION (IN)
TODAY T 3.50 1994 0.12 -0.12 0.80
MONTH TO DATE 5.34 3.64 1.70 2.65
SINCE JUN 1 9.63 7.94 1.69 9.58
SINCE JAN 1 24.55 25.18 -0.63 23.50
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 1 13 -12 15
SINCE JUL 1 0 0 0 0
COOLING
TODAY 13 12 1 18
MONTH TO DATE 384 322 62 404
SINCE JUN 1 662 560 102 725
SINCE JAN 1 835 666 169 843
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 5.9
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 2:00 AM
LOWEST 46 4:00 PM
AVERAGE 67
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 99 1993
MINIMUM TEMPERATURE (F) 67 47 1977
SUNRISE AND SUNSET
JULY 27 2026..........SUNRISE 6:06 AM EDT SUNSET 8:26 PM EDT
JULY 28 2026..........SUNRISE 6:07 AM EDT SUNSET 8:25 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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