705
CDUS41 KLWX 180627
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EDT WED MAR 18 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 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 40 3:27 PM 77 1963 55 -15 58
MINIMUM 27 11:59 PM 16 1970 34 -7 39
AVERAGE 34 44 -10 49
PRECIPITATION (IN)
YESTERDAY 0.00 1.14 1993 0.12 -0.12 0.01
MONTH TO DATE 2.21 1.87 0.34 0.64
SINCE MAR 1 2.21 1.87 0.34 0.64
SINCE JAN 1 8.01 7.42 0.59 5.06
SNOWFALL (IN)
YESTERDAY T 4.5 2014 0.1 -0.1 0.0
MONTH TO DATE 1.0 2.8 -1.8 0.0
SINCE MAR 1 1.0 2.8 -1.8 0.0
SINCE JUL 1 13.6 19.8 -6.2 15.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 31 21 10 16
MONTH TO DATE 265 394 -129 300
SINCE MAR 1 265 394 -129 300
SINCE JUL 1 3894 3904 -10 3622
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 8 0 8 1
SINCE MAR 1 8 0 8 1
SINCE JAN 1 8 0 8 1
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WIND (MPH)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 14.7
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66 1:00 AM
LOWEST 35 4:00 PM
AVERAGE 51
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 55 80 1989
MINIMUM TEMPERATURE (F) 34 13 1976
SUNRISE AND SUNSET
MARCH 18 2026.........SUNRISE 7:16 AM EDT SUNSET 7:20 PM EDT
MARCH 19 2026.........SUNRISE 7:15 AM EDT SUNSET 7:21 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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