047  
CDUS41 KLWX 180540  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1240 AM EST MON DEC 18 2023  
   
...............................
 
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 17 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 56 11:59 PM 65 2021 48 8 50  
MINIMUM 42 1:58 AM 10 1876 34 8 36  
AVERAGE 49 41 8 43  
 
PRECIPITATION (IN)  
YESTERDAY 1.92 2.43 1888 0.11 1.81 0.00  
MONTH TO DATE 4.58 1.96 2.62 2.41  
SINCE DEC 1 4.58 1.96 2.62 2.41  
SINCE JAN 1 33.83 40.37 -6.54 42.06  
 
SNOWFALL (IN)  
YESTERDAY 0.0 11.5 1932 0.1 -0.1 0.0  
MONTH TO DATE 0.1 0.8 -0.7 0.0  
SINCE DEC 1 0.1 0.8 -0.7 0.0  
SINCE JUL 1 0.1 0.9 -0.8 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 16 24 -8 22  
MONTH TO DATE 331 372 -41 366  
SINCE DEC 1 331 372 -41 366  
SINCE JUL 1 920 1018 -98 979  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1710 1737 -27 1793    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 7.6  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 8:00 PM  
LOWEST 82 12:00 AM  
AVERAGE 90  
   
......................................................
 
 
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 2023......SUNRISE 7:21 AM EST SUNSET 4:48 PM EST  
DECEMBER 19 2023......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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