904  
CDUS41 KLWX 050526  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1226 AM EST THU DEC 05 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 4 2024  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 43 11:28 PM 75 1998 50 -7 55  
MINIMUM 17 6:52 AM 10 1966 31 -14 37  
AVERAGE 30 40 -10 46  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.18 1993 0.11 -0.11 0.00  
MONTH TO DATE T 0.45 -0.45 0.69  
SINCE DEC 1 T 0.45 -0.45 0.69  
SINCE JAN 1 31.03 40.39 -9.36 29.72  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 2014 0.0 0.0 0.0  
2016  
2019  
MONTH TO DATE T 0.2 -0.2 0.0  
SINCE DEC 1 T 0.2 -0.2 0.0  
SINCE JUL 1 T 0.5 -0.5 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 35 25 10 19  
MONTH TO DATE 136 97 39 68  
SINCE DEC 1 136 97 39 68  
SINCE JUL 1 804 997 -193 839  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1586 1231 355 1380    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 10.2  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 7:00 AM  
LOWEST 33 2:00 PM  
AVERAGE 58  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 49 77 2001  
MINIMUM TEMPERATURE (F) 31 12 1966  
 
SUNRISE AND SUNSET  
DECEMBER 5 2024......SUNRISE 7:14 AM EST SUNSET 4:47 PM EST  
DECEMBER 6 2024......SUNRISE 7:15 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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