526  
CDUS41 KLWX 062122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
422 PM EST WED JAN 06 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 6 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 41 3:58 PM 71 2007 42 -1 53  
MINIMUM 38 7:02 AM 4 1977 24 14 27  
1999  
AVERAGE 40 33 7 40  
 
PRECIPITATION (IN)  
TODAY 0.00 0.94 1995 0.08 -0.08 0.00  
MONTH TO DATE 1.14 0.48 0.66 0.68  
SINCE DEC 1 6.95 3.44 3.51 3.65  
SINCE JAN 1 1.14 0.48 0.66 0.68  
 
SNOWFALL (IN)  
TODAY 0.0 4.2 2015 0.2 -0.2 0.0  
MONTH TO DATE 0.0 1.0 -1.0 0.0  
SINCE DEC 1 2.4 4.5 -2.1 0.6  
SINCE JUL 1 2.4 5.0 -2.6 0.6  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 25 32 -7 25  
MONTH TO DATE 154 192 -38 140  
SINCE DEC 1 956 1074 -118 940  
SINCE JUL 1 1623 1990 -367 1803  
 
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 22 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 11.2  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 79 12:00 AM  
LOWEST 57 4:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 42 71 2008  
MINIMUM TEMPERATURE (F) 24 -1 2018  
 
SUNRISE AND SUNSET  
JANUARY 6 2021.......SUNRISE 7:29 AM EST SUNSET 5:03 PM EST  
JANUARY 7 2021.......SUNRISE 7:29 AM EST SUNSET 5:04 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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