498
CDUS41 KLWX 220627
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
227 AM EDT FRI MAY 22 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 21 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 70 3:51 AM 92 1996 76 -6 59
2022
MINIMUM 54 8:06 PM 33 1992 55 -1 54
AVERAGE 62 65 -3 57
PRECIPITATION (IN)
YESTERDAY 0.19 1.06 2003 0.17 0.02 0.50
MONTH TO DATE 1.92 3.16 -1.24 3.86
SINCE MAR 1 6.44 10.13 -3.69 7.29
SINCE JAN 1 12.24 15.68 -3.44 11.71
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 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 3 3 0 8
MONTH TO DATE 96 93 3 31
SINCE MAR 1 746 1060 -314 722
SINCE JUL 1 4375 4570 -195 4044
COOLING
YESTERDAY 0 3 -3 0
MONTH TO DATE 62 44 18 68
SINCE MAR 1 148 66 82 115
SINCE JAN 1 148 66 82 115
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WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 9.2
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 1:00 AM
LOWEST 75 12:00 PM
AVERAGE 86
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 91 2022
2024
MINIMUM TEMPERATURE (F) 55 31 2002
SUNRISE AND SUNSET
MAY 22 2026...........SUNRISE 5:52 AM EDT SUNSET 8:22 PM EDT
MAY 23 2026...........SUNRISE 5:51 AM EDT SUNSET 8:23 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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