019
CDUS41 KLWX 200534
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
134 AM EDT WED SEP 20 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 19 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 77 4:30 PM 93 1977 78 -1 87
1978
MINIMUM 54 11:59 PM 36 1984 57 -3 60
AVERAGE 66 68 -2 74
PRECIPITATION (IN)
YESTERDAY 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)
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 12 -11 0
SINCE SEP 1 1 12 -11 0
SINCE JUL 1 1 13 -12 0
COOLING
YESTERDAY 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 21 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 7.7
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 11:00 PM
LOWEST 26 12:00 AM
AVERAGE 55
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 91 1965
MINIMUM TEMPERATURE (F) 56 40 1979
SUNRISE AND SUNSET
SEPTEMBER 20 2023.....SUNRISE 6:55 AM EDT SUNSET 7:10 PM EDT
SEPTEMBER 21 2023.....SUNRISE 6:56 AM EDT SUNSET 7:09 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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