Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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058
CDUS41 KLWX 290626
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
226 AM EDT TUE SEP 29 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 28 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 71 5:14 PM 86 1998 75 -4 85
2019
MINIMUM 61 6:45 AM 34 1989 53 8 62
AVERAGE 66 64 2 74
PRECIPITATION (IN)
YESTERDAY 0.00 1.61 2004 0.14 -0.14 0.00
MONTH TO DATE 3.80 3.65 0.15 1.22
SINCE SEP 1 3.80 3.65 0.15 1.22
SINCE JAN 1 33.20 32.87 0.33 25.86
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 SEP 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 4 -4 0
MONTH TO DATE 21 35 -14 7
SINCE SEP 1 21 35 -14 7
SINCE JUL 1 21 36 -15 9
COOLING
YESTERDAY 1 2 -1 9
MONTH TO DATE 192 147 45 159
SINCE SEP 1 192 147 45 159
SINCE JAN 1 1472 1203 269 1307
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 7.9
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 12:00 AM
LOWEST 63 2:00 PM
AVERAGE 77
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 89 2019
MINIMUM TEMPERATURE (F) 52 34 1978
SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE 7:04 AM EDT SUNSET 6:55 PM EDT
SEPTEMBER 30 2026.....SUNRISE 7:05 AM EDT SUNSET 6:54 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$