563  
CDUS41 KLWX 172125  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
425 PM EST TUE DEC 17 2024  
   
...............................  
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 17 2024  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 65R 12:31 PM 65 2021 48 17 56  
MINIMUM 47 12:22 AM 10 1876 34 13 42  
AVERAGE 56 41 15 49  
 
PRECIPITATION (IN)  
TODAY T 2.43 1888 0.11 -0.11 1.92  
MONTH TO DATE 1.68 1.96 -0.28 4.58  
SINCE DEC 1 1.68 1.96 -0.28 4.58  
SINCE JAN 1 36.37 40.37 -4.00 33.83  
 
SNOWFALL (IN)  
TODAY 0.0 11.5 1932 0.1 -0.1 0.0  
MONTH TO DATE T 0.8 -0.8 0.1  
SINCE DEC 1 T 0.8 -0.8 0.1  
SINCE JUL 1 T 0.9 -0.9 0.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 9 24 -15 16  
MONTH TO DATE 392 372 20 331  
SINCE DEC 1 392 372 20 331  
SINCE JUL 1 815 1018 -203 920  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 2029 1737 292 1681    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 7.1  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1:00 AM  
LOWEST 63 3:00 PM  
AVERAGE 78  
   
......................................................  
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 48 74 2006  
MINIMUM TEMPERATURE (F) 34 10 1919  
1926  
 
SUNRISE AND SUNSET  
DECEMBER 17 2024......SUNRISE 7:21 AM EST SUNSET 4:48 PM EST  
DECEMBER 18 2024......SUNRISE 7:22 AM EST SUNSET 4:48 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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