781  
CDUS41 KLWX 180523  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1223 AM EST WED DEC 18 2024  
   
...............................  
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 17 2024  
 
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)  
YESTERDAY  
MAXIMUM 65R 12:31 PM 65 2021 48 17 56  
MINIMUM 44 11:59 PM 10 1876 34 10 42  
AVERAGE 55 41 14 49  
 
PRECIPITATION (IN)  
YESTERDAY 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)  
YESTERDAY 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  
YESTERDAY 10 24 -14 16  
MONTH TO DATE 393 372 21 331  
SINCE DEC 1 393 372 21 331  
SINCE JUL 1 816 1018 -202 920  
 
COOLING  
YESTERDAY 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 5.6  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1:00 AM  
LOWEST 57 8:00 PM  
AVERAGE 75  
   
......................................................  
 
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 2024......SUNRISE 7:22 AM EST SUNSET 4:48 PM EST  
DECEMBER 19 2024......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.  
 
 
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