512
CDUS41 KLWX 200628
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
228 AM EDT MON JUL 20 2026
...............................
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 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 86 2:39 PM 98 1977 88 -2 90
2020
MINIMUM 71 11:59 PM 53 1976 67 4 72
AVERAGE 79 78 1 81
PRECIPITATION (IN)
YESTERDAY 0.00 1.52 1968 0.13 -0.13 T
MONTH TO DATE 4.46 2.60 1.86 1.80
SINCE JUN 1 8.75 6.90 1.85 8.73
SINCE JAN 1 23.67 24.14 -0.47 22.65
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 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 1 13 -12 15
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 14 12 2 16
MONTH TO DATE 307 226 81 284
SINCE JUN 1 585 464 121 605
SINCE JAN 1 758 570 188 723
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 7.0
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1:00 AM
LOWEST 50 4:00 PM
AVERAGE 74
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THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 101 1980
MINIMUM TEMPERATURE (F) 67 55 1974
SUNRISE AND SUNSET
JULY 20 2026..........SUNRISE 6:01 AM EDT SUNSET 8:31 PM EDT
JULY 21 2026..........SUNRISE 6:01 AM EDT SUNSET 8:31 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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