311  
CDUS41 KLWX 120528  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1228 AM EST THU DEC 12 2024  
   
...............................
 
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 11 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 64 1:00 PM 70 2021 50 14 49  
MINIMUM 38 11:59 PM 12 1880 35 3 34  
1904  
1917  
AVERAGE 51 43 8 42  
 
PRECIPITATION (IN)  
YESTERDAY 0.90 1.66 2008 0.12 0.78 0.47  
MONTH TO DATE 1.00 1.28 -0.28 2.66  
SINCE DEC 1 1.00 1.28 -0.28 2.66  
SINCE JAN 1 35.69 39.69 -4.00 31.91  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.8 1960 0.1 -0.1 0.1  
MONTH TO DATE T 0.5 -0.5 0.1  
SINCE DEC 1 T 0.5 -0.5 0.1  
SINCE JUL 1 T 0.6 -0.6 0.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 14 22 -8 23  
MONTH TO DATE 255 232 23 206  
SINCE DEC 1 255 232 23 206  
SINCE JUL 1 678 878 -200 795  
 
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 30 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 12.6  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 5:00 AM  
LOWEST 50 11:00 PM  
AVERAGE 72  
   
......................................................
 
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 50 71 1873  
MINIMUM TEMPERATURE (F) 35 13 1957  
1988  
 
SUNRISE AND SUNSET  
DECEMBER 12 2024......SUNRISE 7:18 AM EST SUNSET 4:47 PM EST  
DECEMBER 13 2024......SUNRISE 7:18 AM EST SUNSET 4:47 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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