293
CDUS41 KLWX 120626
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
226 AM EDT SAT SEP 12 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 11 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 79 5:24 PM 99 1983 81 -2 84
MINIMUM 66 11:57 PM 40 1976 60 6 58
AVERAGE 73 70 3 71
PRECIPITATION (IN)
YESTERDAY 0.56 1.45 2023 0.13 0.43 T
MONTH TO DATE 1.39 1.35 0.04 0.18
SINCE SEP 1 1.39 1.35 0.04 0.18
SINCE JAN 1 30.79 30.57 0.22 24.82
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 1 -1 0
MONTH TO DATE 0 2 -2 6
SINCE SEP 1 0 2 -2 6
SINCE JUL 1 0 3 -3 8
COOLING
YESTERDAY 8 6 2 6
MONTH TO DATE 134 80 54 45
SINCE SEP 1 134 80 54 45
SINCE JAN 1 1414 1136 278 1193
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 4.0
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 5:00 AM
LOWEST 67 4:00 PM
AVERAGE 84
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 95 1998
2019
MINIMUM TEMPERATURE (F) 60 40 1967
SUNRISE AND SUNSET
SEPTEMBER 12 2026.....SUNRISE 6:49 AM EDT SUNSET 7:23 PM EDT
SEPTEMBER 13 2026.....SUNRISE 6:49 AM EDT SUNSET 7:21 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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