549
CDUS41 KLWX 180730
CLIDCA
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
230 AM EST THU DEC 18 2025
...............................
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 17 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 51 2:09 PM 65 2021 48 3 65
2024
MINIMUM 28 3:47 AM 10 1876 34 -6 44
AVERAGE 40 41 -1 55
PRECIPITATION (IN)
YESTERDAY 0.00 2.43 1888 0.11 -0.11 T
MONTH TO DATE 1.20 1.96 -0.76 1.68
SINCE DEC 1 1.20 1.96 -0.76 1.68
SINCE JAN 1 34.99 40.37 -5.38 36.37
SNOWFALL (IN)
YESTERDAY 0.0 11.5 1932 0.1 -0.1 0.0
MONTH TO DATE 1.5 0.8 0.7 T
SINCE DEC 1 1.5 0.8 0.7 T
SINCE JUL 1 1.5 0.9 0.6 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 25 24 1 10
MONTH TO DATE 487 372 115 393
SINCE DEC 1 487 372 115 393
SINCE JUL 1 1062 1018 44 816
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1716 1737 -21 2029
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 3.4
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 11:00 PM
LOWEST 44 1:00 PM
AVERAGE 65
......................................................
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 48 74 2006
MINIMUM TEMPERATURE (F) 34 10 1919
1926
SUNRISE AND SUNSET
DECEMBER 18 2025......SUNRISE 7:21 AM EST SUNSET 4:48 PM EST
DECEMBER 19 2025......SUNRISE 7:22 AM EST SUNSET 4:49 PM EST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page