167  
CDUS41 KLWX 122124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
424 PM EST FRI FEB 12 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 12 2021
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 32 3:59 PM 74 1999 46 -14 48  
MINIMUM 28 9:15 AM 3 1964 25 3 39  
AVERAGE 30 36 -6 44  
 
PRECIPITATION (IN)  
TODAY T 1.77 1985 0.09 -0.09 0.07  
MONTH TO DATE 1.05 1.18 -0.13 2.02  
SINCE DEC 1 8.74 6.82 1.92 8.32  
SINCE JAN 1 2.93 3.86 -0.93 5.35  
 
SNOWFALL (IN)  
TODAY T 5.1 1979 0.3 -0.3 T  
MONTH TO DATE 5.0 3.7 1.3 T  
SINCE DEC 1 10.6 14.5 -3.9 2.9  
SINCE JUL 1 10.6 15.0 -4.4 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 35 29 6 21  
MONTH TO DATE 359 364 -5 236  
SINCE DEC 1 2065 2232 -167 1840  
SINCE JUL 1 2732 3148 -416 2703  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 4.7  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT SNOW  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 1:00 AM  
LOWEST 56 5:00 AM  
AVERAGE 67  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 46 65 1974  
MINIMUM TEMPERATURE (F) 26 -8 1983  
 
SUNRISE AND SUNSET  
FEBRUARY 12 2021......SUNRISE 7:04 AM EST SUNSET 5:44 PM EST  
FEBRUARY 13 2021......SUNRISE 7:03 AM EST SUNSET 5:45 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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