224
CDUS41 KLWX 190530
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
130 AM EDT TUE SEP 19 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 18 2023
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)
YESTERDAY
MAXIMUM 79 3:57 PM 91 1978 79 0 85
MINIMUM 61 10:25 PM 37 1990 57 4 57
AVERAGE 70 68 2 71
PRECIPITATION (IN)
YESTERDAY 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)
YESTERDAY 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
YESTERDAY 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
YESTERDAY 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 10.3
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 1:00 AM
LOWEST MM
AVERAGE MM
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 93 1977
1978
MINIMUM TEMPERATURE (F) 57 36 1984
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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