112  
CDUS41 KLWX 132126  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
426 PM EST WED JAN 13 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 13 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 51 3:45 PM 69 2005 42 9 50  
MINIMUM 22 7:35 AM -3 1977 24 -2 38  
1981  
AVERAGE 37 33 4 44  
 
PRECIPITATION (IN)  
TODAY 0.00 1.03 1964 0.08 -0.08 0.00  
MONTH TO DATE 1.14 1.07 0.07 1.39  
SINCE DEC 1 6.95 4.03 2.92 4.36  
SINCE JAN 1 1.14 1.07 0.07 1.39  
 
SNOWFALL (IN)  
TODAY 0.0 7.7 2019 0.3 -0.3 0.0  
MONTH TO DATE 0.0 2.5 -2.5 2.0  
SINCE DEC 1 2.4 6.0 -3.6 2.6  
SINCE JUL 1 2.4 6.5 -4.1 2.6  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 28 32 -4 21  
MONTH TO DATE 360 416 -56 291  
SINCE DEC 1 1162 1298 -136 1091  
SINCE JUL 1 1829 2214 -385 1954  
 
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 12 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 2.2  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 8:00 AM  
LOWEST 38 3:00 PM  
AVERAGE 65  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 42 72 1995  
MINIMUM TEMPERATURE (F) 24 5 1970  
 
SUNRISE AND SUNSET  
JANUARY 13 2021.......SUNRISE 7:28 AM EST SUNSET 5:10 PM EST  
JANUARY 14 2021.......SUNRISE 7:27 AM EST SUNSET 5:11 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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