404
CDUS41 KLWX 172126
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
526 PM EDT FRI APR 17 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 17 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 80 3:59 PM 93 2002 68 12 64
MINIMUM 62 5:05 AM 27 1983 44 18 32
AVERAGE 71 56 15 48
PRECIPITATION (IN)
TODAY 0.00 1.44 2000 0.11 -0.11 0.00
MONTH TO DATE 0.72 1.87 -1.15 1.37
SINCE MAR 1 3.57 5.37 -1.80 2.79
SINCE JAN 1 9.37 10.92 -1.55 7.21
SNOWFALL (IN)
TODAY 0.0 T 1983 0.0 0.0 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE MAR 1 1.0 4.0 -3.0 0.0
SINCE JUL 1 13.6 21.0 -7.4 15.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 10 -10 17
MONTH TO DATE 93 216 -123 213
SINCE MAR 1 535 863 -328 663
SINCE JUL 1 4164 4373 -209 3985
COOLING
TODAY 6 1 5 0
MONTH TO DATE 61 6 55 2
SINCE MAR 1 77 8 69 19
SINCE JAN 1 77 8 69 19
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 9.9
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 5:00 AM
LOWEST 36 1:00 PM
AVERAGE 57
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 90 1976
MINIMUM TEMPERATURE (F) 44 29 2018
SUNRISE AND SUNSET
APRIL 17 2026.........SUNRISE 6:30 AM EDT SUNSET 7:49 PM EDT
APRIL 18 2026.........SUNRISE 6:29 AM EDT SUNSET 7:50 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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