397
CDUS41 KLWX 210622
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
222 AM EDT TUE APR 21 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 20 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 56 2:14 PM 88 1976 69 -13 73
1985
2023
MINIMUM 33 11:59 PM 28 1974 45 -12 61
AVERAGE 45 57 -12 67
PRECIPITATION (IN)
YESTERDAY T 2.90 2008 0.12 -0.12 0.00
MONTH TO DATE 0.92 2.21 -1.29 1.37
SINCE MAR 1 3.77 5.71 -1.94 2.79
SINCE JAN 1 9.57 11.26 -1.69 7.21
SNOWFALL (IN)
YESTERDAY T R T 1983 0.0 0.0 0.0
MONTH TO DATE T 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 20 9 11 0
MONTH TO DATE 126 244 -118 217
SINCE MAR 1 568 891 -323 667
SINCE JUL 1 4197 4401 -204 3989
COOLING
YESTERDAY 0 1 -1 2
MONTH TO DATE 61 9 52 14
SINCE MAR 1 77 11 66 31
SINCE JAN 1 77 11 66 31
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 9.6
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 2:00 AM
LOWEST 23 5:00 PM
AVERAGE 53
......................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 89 1985
MINIMUM TEMPERATURE (F) 45 29 1983
SUNRISE AND SUNSET
APRIL 21 2026.........SUNRISE 6:25 AM EDT SUNSET 7:53 PM EDT
APRIL 22 2026.........SUNRISE 6:23 AM EDT SUNSET 7:54 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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