505
CDUS41 KLWX 290633
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
233 AM EDT FRI AUG 29 2025
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 28 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 81 4:13 PM 99 2024 85 -4 99
MINIMUM 50 5:37 AM 44 1986 64 -14 72
AVERAGE 66 74 -8 86
PRECIPITATION (IN)
YESTERDAY 0.00 1.73 2002 0.11 -0.11 T
MONTH TO DATE 0.85 3.20 -2.35 3.07
SINCE JUN 1 10.72 11.65 -0.93 6.42
SINCE JAN 1 24.64 28.89 -4.25 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 1 9 -8 21
MONTH TO DATE 228 308 -80 342
SINCE JUN 1 1026 924 102 1195
SINCE JAN 1 1144 1030 114 1378
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WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 2.3
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 6:00 AM
LOWEST 24 4:00 PM
AVERAGE 59
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 85 98 1991
MINIMUM TEMPERATURE (F) 63 38 1982
SUNRISE AND SUNSET
AUGUST 29 2025........SUNRISE 6:36 AM EDT SUNSET 7:44 PM EDT
AUGUST 30 2025........SUNRISE 6:37 AM EDT SUNSET 7:43 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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