Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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685
CDUS41 KLWX 212121
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
521 PM EDT SAT JUN 21 2025
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 21 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 90 3:59 PM 98 1988 85 5 97
MINIMUM 66 5:51 AM 49 1992 64 2 66
AVERAGE 78 74 4 82
PRECIPITATION (IN)
TODAY 0.00 10.67 1972 0.14 -0.14 0.00
MONTH TO DATE 5.84 3.03 2.81 0.28
SINCE JUN 1 5.84 3.03 2.81 0.28
SINCE JAN 1 19.76 20.27 -0.51 17.58
SNOWFALL (IN)
TODAY 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 15.5 21.0 -5.5 11.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 15 11 4 0
SINCE JUN 1 15 11 4 0
SINCE JUL 1 4106 4603 -497 3691
COOLING
TODAY 13 9 4 17
MONTH TO DATE 173 144 29 202
SINCE JUN 1 173 144 29 202
SINCE JAN 1 291 250 41 385
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 3.1
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 6:00 AM
LOWEST 40 4:00 PM
AVERAGE 69
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 85 100 2024
MINIMUM TEMPERATURE (F) 64 48 1963
1992
SUNRISE AND SUNSET
JUNE 21 2025..........SUNRISE 5:45 AM EDT SUNSET 8:39 PM EDT
JUNE 22 2025..........SUNRISE 5:45 AM EDT SUNSET 8:39 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$