280
CDUS41 KLWX 280626
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
226 AM EDT THU MAY 28 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 27 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 82 4:52 PM 92 1965 78 4 66
2010
MINIMUM 67 11:34 PM 37 1972 56 11 48
AVERAGE 75 67 8 57
PRECIPITATION (IN)
YESTERDAY 0.08 1.45 1968 0.15 -0.07 0.12
MONTH TO DATE 4.60 4.10 0.50 4.08
SINCE MAR 1 9.12 11.07 -1.95 7.51
SINCE JAN 1 14.92 16.62 -1.70 11.93
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 MM
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 8
MONTH TO DATE 125 108 17 63
SINCE MAR 1 775 1075 -300 754
SINCE JUL 1 4404 4585 -181 4076
COOLING
YESTERDAY 10 4 6 0
MONTH TO DATE 81 67 14 68
SINCE MAR 1 167 89 78 115
SINCE JAN 1 167 89 78 115
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WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 4.5
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 60 5:00 PM
AVERAGE 80
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 90 1991
2012
2019
MINIMUM TEMPERATURE (F) 57 37 1994
SUNRISE AND SUNSET
MAY 28 2026...........SUNRISE 5:48 AM EDT SUNSET 8:27 PM EDT
MAY 29 2026...........SUNRISE 5:47 AM EDT SUNSET 8:27 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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