183
CDUS41 KLWX 180534
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
134 AM EDT TUE JUL 18 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 17 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 90 3:59 PM 100 1988 88 2 85
1997
MINIMUM 68 5:35 AM 55 1976 67 1 70
2014
AVERAGE 79 78 1 78
PRECIPITATION (IN)
YESTERDAY 0.00 1.11 2018 0.14 -0.14 0.17
MONTH TO DATE 3.44 2.32 1.12 3.98
SINCE JUN 1 5.74 6.62 -0.88 6.73
SINCE JAN 1 15.72 23.86 -8.14 23.95
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 5 13 -8 0
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 14 12 2 13
MONTH TO DATE 269 202 67 208
SINCE JUN 1 451 440 11 445
SINCE JAN 1 525 546 -21 574
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WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 3.8
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 4:00 AM
LOWEST 44 3:00 PM
AVERAGE 69
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 101 2012
MINIMUM TEMPERATURE (F) 67 51 1985
SUNRISE AND SUNSET
JULY 18 2023..........SUNRISE 5:59 AM EDT SUNSET 8:33 PM EDT
JULY 19 2023..........SUNRISE 6:00 AM EDT SUNSET 8:32 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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