399
CDUS41 KLWX 172124
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
524 PM EDT SUN SEP 17 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 17 2023
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2023
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 74 12:59 PM 97 1991 79 -5 81
MINIMUM 54 3:18 AM 35 1986 58 -4 55
AVERAGE 64 68 -4 68
PRECIPITATION (IN)
TODAY 0.09 1.71 2004 0.14 -0.05 0.00
MONTH TO DATE 3.59 2.18 1.41 2.78
SINCE SEP 1 3.59 2.18 1.41 2.78
SINCE JAN 1 22.81 31.40 -8.59 30.28
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE T 0.0 0.0 0.0
SINCE SEP 1 T 0.0 0.0 0.0
SINCE JUL 1 T 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 1 1 0 0
MONTH TO DATE 1 8 -7 0
SINCE SEP 1 1 8 -7 0
SINCE JUL 1 1 9 -8 0
COOLING
TODAY 0 5 -5 3
MONTH TO DATE 199 112 87 144
SINCE SEP 1 199 112 87 144
SINCE JAN 1 1314 1168 146 1322
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 2.8
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 10:00 AM
LOWEST 30 2:00 AM
AVERAGE 59
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 91 1978
MINIMUM TEMPERATURE (F) 57 37 1990
SUNRISE AND SUNSET
SEPTEMBER 17 2023.....SUNRISE 6:53 AM EDT SUNSET 7:15 PM EDT
SEPTEMBER 18 2023.....SUNRISE 6:54 AM EDT SUNSET 7:14 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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