202
CDUS41 KLWX 280632
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
232 AM EDT THU AUG 28 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 27 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 79 2:56 PM 100 1987 85 -6 93
MINIMUM 51 11:55 PM 46 1969 64 -13 66
AVERAGE 65 74 -9 80
PRECIPITATION (IN)
YESTERDAY 0.00 1.98 1971 0.12 -0.12 0.00
MONTH TO DATE 0.85 3.09 -2.24 3.07
SINCE JUN 1 10.72 11.54 -0.82 6.42
SINCE JAN 1 24.64 28.78 -4.14 23.72
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 2
SINCE JUN 1 15 13 2 2
SINCE JUL 1 0 0 0 2
COOLING
YESTERDAY 0 10 -10 15
MONTH TO DATE 227 299 -72 321
SINCE JUN 1 1025 915 110 1174
SINCE JAN 1 1143 1021 122 1357
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WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 5.9
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 6:00 AM
LOWEST 31 2:00 PM
AVERAGE 59
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 85 99 2024
MINIMUM TEMPERATURE (F) 64 44 1986
SUNRISE AND SUNSET
AUGUST 28 2025........SUNRISE 6:35 AM EDT SUNSET 7:46 PM EDT
AUGUST 29 2025........SUNRISE 6:36 AM EDT SUNSET 7:44 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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