418  
CDUS41 KLWX 152126  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
426 PM EST FRI DEC 15 2023  
   
...............................  
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 15 2023  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 61 3:47 PM 71 1971 49 12 48  
MINIMUM 33 7:26 AM 6 1904 35 -2 34  
AVERAGE 47 42 5 41  
 
PRECIPITATION (IN)  
TODAY 0.00 2.55 2018 0.11 -0.11 1.88  
MONTH TO DATE 2.66 1.74 0.92 2.41  
SINCE DEC 1 2.66 1.74 0.92 2.41  
SINCE JAN 1 31.91 40.15 -8.24 42.06  
 
SNOWFALL (IN)  
TODAY 0.0 4.5 1905 0.1 -0.1 0.0  
MONTH TO DATE 0.1 0.7 -0.6 0.0  
SINCE DEC 1 0.1 0.7 -0.6 0.0  
SINCE JUL 1 0.1 0.8 -0.7 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 18 23 -5 24  
MONTH TO DATE 298 324 -26 326  
SINCE DEC 1 298 324 -26 326  
SINCE JUL 1 887 970 -83 939  
 
COOLING  
TODAY 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 15 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 6.0  
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 70 9:00 AM  
LOWEST 28 12:00 PM  
AVERAGE 49  
   
......................................................  
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 49 74 1971  
MINIMUM TEMPERATURE (F) 34 10 1917  
 
SUNRISE AND SUNSET  
DECEMBER 15 2023......SUNRISE 7:19 AM EST SUNSET 4:47 PM EST  
DECEMBER 16 2023......SUNRISE 7:20 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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