677
CDUS41 KLWX 200621
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
221 AM EDT MON APR 20 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 19 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 66 1:03 AM 91 2002 68 -2 82
MINIMUM 37 11:14 PM 27 1990 44 -7 67
2001
AVERAGE 52 56 -4 75
PRECIPITATION (IN)
YESTERDAY 0.20 1.26 2019 0.11 0.09 0.00
MONTH TO DATE 0.92 2.09 -1.17 1.37
SINCE MAR 1 3.77 5.59 -1.82 2.79
SINCE JAN 1 9.57 11.14 -1.57 7.21
SNOWFALL (IN)
YESTERDAY 0.0 T 2022 0.0 0.0 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE MAR 1 1.0 4.0 -3.0 0.0
SINCE JUL 1 13.6 21.0 -7.4 15.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 13 9 4 0
MONTH TO DATE 106 235 -129 217
SINCE MAR 1 548 882 -334 667
SINCE JUL 1 4177 4392 -215 3989
COOLING
YESTERDAY 0 1 -1 10
MONTH TO DATE 61 8 53 12
SINCE MAR 1 77 10 67 29
SINCE JAN 1 77 10 67 29
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 10.9
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 5:00 AM
LOWEST 23 5:00 PM
AVERAGE 57
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 88 1976
1985
2023
MINIMUM TEMPERATURE (F) 45 28 1974
SUNRISE AND SUNSET
APRIL 20 2026.........SUNRISE 6:26 AM EDT SUNSET 7:52 PM EDT
APRIL 21 2026.........SUNRISE 6:25 AM EDT SUNSET 7:53 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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