Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CDUS41 KLWX 230635
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
235 AM EDT THU JUL 23 2026
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 22 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 89 3:53 PM 105 2011 88 1 86
MINIMUM 69 5:06 AM 50 1974 67 2 64
AVERAGE 79 78 1 75
PRECIPITATION (IN)
YESTERDAY 0.00 2.25 1969 0.13 -0.13 0.00
MONTH TO DATE 5.34 3.00 2.34 1.83
SINCE JUN 1 9.63 7.30 2.33 8.76
SINCE JAN 1 24.55 24.54 0.01 22.68
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 10
MONTH TO DATE 344 262 82 322
SINCE JUN 1 622 500 122 643
SINCE JAN 1 795 606 189 761
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 7.4
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 2:00 AM
LOWEST 43 5:00 PM
AVERAGE 70
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 88 99 1991
2011
MINIMUM TEMPERATURE (F) 67 50 1977
1983
SUNRISE AND SUNSET
JULY 23 2026..........SUNRISE 6:03 AM EDT SUNSET 8:29 PM EDT
JULY 24 2026..........SUNRISE 6:04 AM EDT SUNSET 8:28 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$