233
CDUS41 KLWX 180630
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
230 AM EDT THU JUN 18 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 17 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 87 4:10 PM 96 2022 84 3 81
MINIMUM 58 5:10 AM 46 1980 63 -5 66
AVERAGE 73 73 0 74
PRECIPITATION (IN)
YESTERDAY 0.00 1.01 1979 0.15 -0.15 0.06
MONTH TO DATE 1.05 2.50 -1.45 5.18
SINCE JUN 1 1.05 2.50 -1.45 5.18
SINCE JAN 1 15.97 19.74 -3.77 19.10
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 13.6 21.0 -7.4 15.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 1 11 -10 15
SINCE JUN 1 1 11 -10 15
SINCE JUL 1 4412 4603 -191 4106
COOLING
YESTERDAY 8 8 0 9
MONTH TO DATE 144 109 35 119
SINCE JUN 1 144 109 35 119
SINCE JAN 1 317 215 102 237
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WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 7.3
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 5:00 AM
LOWEST 36 3:00 PM
AVERAGE 66
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 94 2006
2007
2018
MINIMUM TEMPERATURE (F) 63 45 1965
SUNRISE AND SUNSET
JUNE 18 2026..........SUNRISE 5:44 AM EDT SUNSET 8:38 PM EDT
JUNE 19 2026..........SUNRISE 5:44 AM EDT SUNSET 8:38 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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