Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 260621
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
221 AM EDT WED AUG 26 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 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 83 1:57 PM 97 1998 85 -2 84
2007
2023
MINIMUM 56 6:10 AM 47 1971 64 -8 60
AVERAGE 70 75 -5 72
PRECIPITATION (IN)
YESTERDAY 0.00 3.03 1999 0.13 -0.13 0.00
MONTH TO DATE 4.29 2.85 1.44 0.85
SINCE JUN 1 13.92 11.30 2.62 10.72
SINCE JAN 1 28.84 28.54 0.30 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 5 10 -5 7
MONTH TO DATE 320 279 41 225
SINCE JUN 1 1033 895 138 1023
SINCE JAN 1 1206 1001 205 1141
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 3.6
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 6:00 AM
LOWEST 42 2:00 PM
AVERAGE 66
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 85 95 1993
1998
2016
MINIMUM TEMPERATURE (F) 64 48 1977
SUNRISE AND SUNSET
AUGUST 26 2026........SUNRISE 6:33 AM EDT SUNSET 7:49 PM EDT
AUGUST 27 2026........SUNRISE 6:34 AM EDT SUNSET 7:48 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$