631
CDUS41 KLWX 192127
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
527 PM EDT TUE SEP 19 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 19 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 77 3:59 PM 93 1977 78 -1 87
1978
MINIMUM 55 5:43 AM 36 1984 57 -2 60
AVERAGE 66 68 -2 74
PRECIPITATION (IN)
TODAY 0.00 1.26 2000 0.14 -0.14 T
MONTH TO DATE 3.61 2.47 1.14 2.78
SINCE SEP 1 3.61 2.47 1.14 2.78
SINCE JAN 1 22.83 31.69 -8.86 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 0 2 -2 0
MONTH TO DATE 1 12 -11 0
SINCE SEP 1 1 12 -11 0
SINCE JUL 1 1 13 -12 0
COOLING
TODAY 1 4 -3 9
MONTH TO DATE 205 120 85 159
SINCE SEP 1 205 120 85 159
SINCE JAN 1 1320 1176 144 1337
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 9.1
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 69 7:00 AM
LOWEST 26 12:00 AM
AVERAGE 48
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 91 1965
MINIMUM TEMPERATURE (F) 56 40 1979
SUNRISE AND SUNSET
SEPTEMBER 19 2023.....SUNRISE 6:55 AM EDT SUNSET 7:12 PM EDT
SEPTEMBER 20 2023.....SUNRISE 6:55 AM EDT SUNSET 7:10 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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