Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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009
CDUS41 KLWX 010633
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
233 AM EDT THU OCT 01 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 30 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 81 2:26 PM 92 1986 74 7 75
MINIMUM 56 6:37 AM 35 1993 52 4 66
AVERAGE 69 63 6 71
PRECIPITATION (IN)
YESTERDAY 0.00 4.74 2010 0.15 -0.15 T
MONTH TO DATE 3.80 3.94 -0.14 1.22
SINCE SEP 1 3.80 3.94 -0.14 1.22
SINCE JAN 1 33.20 33.16 0.04 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 43 -22 7
SINCE SEP 1 21 43 -22 7
SINCE JUL 1 21 44 -23 9
COOLING
YESTERDAY 4 2 2 6
MONTH TO DATE 198 152 46 170
SINCE SEP 1 198 152 46 170
SINCE JAN 1 1478 1208 270 1318
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 3.6
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 3:00 AM
LOWEST 52 2:00 PM
AVERAGE 76
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 90 1986
MINIMUM TEMPERATURE (F) 52 31 1993
SUNRISE AND SUNSET
OCTOBER 1 2026.......SUNRISE 7:06 AM EDT SUNSET 6:52 PM EDT
OCTOBER 2 2026.......SUNRISE 7:07 AM EDT SUNSET 6:51 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$