611
CDUS41 KLWX 210525
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
125 AM EDT THU SEP 21 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 20 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 80 4:32 PM 91 1965 78 2 84
MINIMUM 49 4:30 AM 40 1979 56 -7 60
AVERAGE 65 67 -2 72
PRECIPITATION (IN)
YESTERDAY 0.00 0.87 1966 0.14 -0.14 T
MONTH TO DATE 3.61 2.61 1.00 2.78
SINCE SEP 1 3.61 2.61 1.00 2.78
SINCE JAN 1 22.83 31.83 -9.00 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 14 -13 0
SINCE SEP 1 1 14 -13 0
SINCE JUL 1 1 15 -14 0
COOLING
YESTERDAY 0 4 -4 7
MONTH TO DATE 205 124 81 166
SINCE SEP 1 205 124 81 166
SINCE JAN 1 1320 1180 140 1344
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 1.8
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 1:00 AM
LOWEST 36 3:00 PM
AVERAGE 63
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 92 1965
1998
MINIMUM TEMPERATURE (F) 56 33 1962
SUNRISE AND SUNSET
SEPTEMBER 21 2023.....SUNRISE 6:56 AM EDT SUNSET 7:09 PM EDT
SEPTEMBER 22 2023.....SUNRISE 6:57 AM EDT SUNSET 7:07 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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