205
CDUS41 KLWX 270621
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
221 AM EDT THU AUG 27 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 26 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 86 2:48 PM 95 1993 85 1 81
1998
2016
MINIMUM 59 5:42 AM 48 1977 64 -5 53
AVERAGE 73 75 -2 67
PRECIPITATION (IN)
YESTERDAY 0.00 1.48 1965 0.12 -0.12 0.00
MONTH TO DATE 4.29 2.97 1.32 0.85
SINCE JUN 1 13.92 11.42 2.50 10.72
SINCE JAN 1 28.84 28.66 0.18 24.64
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 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
YESTERDAY 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
YESTERDAY 8 10 -2 2
MONTH TO DATE 328 289 39 227
SINCE JUN 1 1041 905 136 1025
SINCE JAN 1 1214 1011 203 1143
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.8
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 3:00 AM
LOWEST 43 2:00 PM
AVERAGE 70
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 85 100 1987
MINIMUM TEMPERATURE (F) 64 46 1969
SUNRISE AND SUNSET
AUGUST 27 2026........SUNRISE 6:34 AM EDT SUNSET 7:48 PM EDT
AUGUST 28 2026........SUNRISE 6:35 AM EDT SUNSET 7:46 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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