795
CDUS41 KLWX 182125
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
525 PM EDT MON SEP 18 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 18 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 79 3:57 PM 91 1978 79 0 85
MINIMUM 61 6:40 AM 37 1990 57 4 57
AVERAGE 70 68 2 71
PRECIPITATION (IN)
TODAY 0.00 1.76 2003 0.15 -0.15 0.00
MONTH TO DATE 3.61 2.33 1.28 2.78
SINCE SEP 1 3.61 2.33 1.28 2.78
SINCE JAN 1 22.83 31.55 -8.72 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 10 -9 0
SINCE SEP 1 1 10 -9 0
SINCE JUL 1 1 11 -10 0
COOLING
TODAY 5 4 1 6
MONTH TO DATE 204 116 88 150
SINCE SEP 1 204 116 88 150
SINCE JAN 1 1319 1172 147 1328
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 10.6
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 1:00 AM
LOWEST 23 4:00 PM
AVERAGE 57
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 93 1977
1978
MINIMUM TEMPERATURE (F) 57 36 1984
SUNRISE AND SUNSET
SEPTEMBER 18 2023.....SUNRISE 6:54 AM EDT SUNSET 7:14 PM EDT
SEPTEMBER 19 2023.....SUNRISE 6:55 AM EDT SUNSET 7:12 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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