051
CDUS41 KLWX 172123
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
523 PM EDT SUN MAY 17 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 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 88 3:59 PM 93 1960 75 13 86
MINIMUM 57 5:15 AM 30 1984 53 4 65
AVERAGE 73 64 9 76
PRECIPITATION (IN)
TODAY 0.01 1.22 1970 0.16 -0.15 0.01
MONTH TO DATE 0.87 2.53 -1.66 3.34
SINCE MAR 1 5.39 9.50 -4.11 6.77
SINCE JAN 1 11.19 15.05 -3.86 11.19
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 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 4 -4 0
MONTH TO DATE 93 81 12 20
SINCE MAR 1 743 1048 -305 711
SINCE JUL 1 4372 4558 -186 4033
COOLING
TODAY 8 3 5 11
MONTH TO DATE 16 32 -16 63
SINCE MAR 1 102 54 48 110
SINCE JAN 1 102 54 48 110
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WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 4.3
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 2:00 AM
LOWEST 40 3:00 PM
AVERAGE 67
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 91 1987
MINIMUM TEMPERATURE (F) 54 33 1973
SUNRISE AND SUNSET
MAY 17 2026...........SUNRISE 5:55 AM EDT SUNSET 8:18 PM EDT
MAY 18 2026...........SUNRISE 5:55 AM EDT SUNSET 8:18 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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