921
CDUS41 KLWX 260621
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
221 AM EDT TUE MAY 26 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 25 2026
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)
YESTERDAY
MAXIMUM 77 3:22 PM 92 1991 77 0 72
MINIMUM 62 2:38 AM 36 1967 56 6 43
AVERAGE 70 66 4 58
PRECIPITATION (IN)
YESTERDAY 0.07 1.76 1997 0.16 -0.09 0.00
MONTH TO DATE 4.44 3.80 0.64 3.96
SINCE MAR 1 8.96 10.77 -1.81 7.39
SINCE JAN 1 14.76 16.32 -1.56 11.81
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 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
YESTERDAY 0 2 -2 7
MONTH TO DATE 125 104 21 52
SINCE MAR 1 775 1071 -296 743
SINCE JUL 1 4404 4581 -177 4065
COOLING
YESTERDAY 5 4 1 0
MONTH TO DATE 67 59 8 68
SINCE MAR 1 153 81 72 115
SINCE JAN 1 153 81 72 115
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 3.1
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 2:00 AM
LOWEST 71 4:00 PM
AVERAGE 86
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 92 2007
2021
MINIMUM TEMPERATURE (F) 56 38 1967
SUNRISE AND SUNSET
MAY 26 2026...........SUNRISE 5:49 AM EDT SUNSET 8:25 PM EDT
MAY 27 2026...........SUNRISE 5:49 AM EDT SUNSET 8:26 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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