596
CDUS41 KLWX 182123
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
523 PM EDT THU MAY 18 2023
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 18 2023
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 70 3:07 PM 91 1987 75 -5 75
MINIMUM 46 5:03 AM 33 1973 54 -8 52
AVERAGE 58 64 -6 64
PRECIPITATION (IN)
TODAY 0.00 3.13 1988 0.15 -0.15 T
MONTH TO DATE 0.75 2.68 -1.93 4.14
SINCE MAR 1 5.62 9.65 -4.03 8.31
SINCE JAN 1 9.25 15.20 -5.95 14.51
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE MAR 1 T 4.0 -4.0 3.5
SINCE JUL 1 0.4 21.0 -20.6 15.8
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 7 3 4 1
MONTH TO DATE 92 84 8 75
SINCE MAR 1 875 1051 -176 941
SINCE JUL 1 3829 4561 -732 4015
COOLING
TODAY 0 3 -3 0
MONTH TO DATE 16 35 -19 28
SINCE MAR 1 61 57 4 42
SINCE JAN 1 61 57 4 42
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 6.6
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 49 4:00 AM
LOWEST 39 9:00 AM
AVERAGE 44
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 92 1996
1997
MINIMUM TEMPERATURE (F) 54 36 2002
SUNRISE AND SUNSET
MAY 18 2023...........SUNRISE 5:55 AM EDT SUNSET 8:18 PM EDT
MAY 19 2023...........SUNRISE 5:54 AM EDT SUNSET 8:19 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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