138
CDUS41 KLWX 110533
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
133 AM EDT MON SEP 11 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 10 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 84 2:12 PM 99 1983 82 2 82
MINIMUM 67 6:11 AM 43 1981 60 7 58
AVERAGE 76 71 5 70
PRECIPITATION (IN)
YESTERDAY T 1.50 1968 0.12 -0.12 0.02
MONTH TO DATE 1.24 1.22 0.02 1.93
SINCE SEP 1 1.24 1.22 0.02 1.93
SINCE JAN 1 20.46 30.44 -9.98 29.43
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 1 -1 0
MONTH TO DATE 0 1 -1 0
SINCE SEP 1 0 1 -1 0
SINCE JUL 1 0 2 -2 0
COOLING
YESTERDAY 11 6 5 5
MONTH TO DATE 151 74 77 101
SINCE SEP 1 151 74 77 101
SINCE JAN 1 1266 1130 136 1279
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WIND (MPH)
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 2.7
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 2:00 AM
LOWEST 65 12:00 PM
AVERAGE 79
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 99 1983
MINIMUM TEMPERATURE (F) 60 40 1976
SUNRISE AND SUNSET
SEPTEMBER 11 2023.....SUNRISE 6:47 AM EDT SUNSET 7:25 PM EDT
SEPTEMBER 12 2023.....SUNRISE 6:48 AM EDT SUNSET 7:23 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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