357  
CDUS41 KLWX 082133  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
432 PM EST TUE JAN 8 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 8 2019
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 59 359 PM 70 2008 42 17 35  
MINIMUM 36 743 AM -4 1970 24 12 17  
AVERAGE 48 33 15 26  
 
PRECIPITATION (IN)  
TODAY 0.03 1.07 1978 0.08 -0.05 0.05  
MONTH TO DATE 0.17 0.65 -0.48 0.07  
SINCE DEC 1 5.93 3.61 2.32 0.84  
SINCE JAN 1 0.17 0.65 -0.48 0.07  
 
SNOWFALL (IN)  
TODAY 0.0 4.7 1990 0.2 -0.2  
MONTH TO DATE 0.0 1.4 -1.4  
SINCE JUL 1 3.0 5.4 -2.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 17 32 -15 39  
MONTH TO DATE 179 256 -77 384  
SINCE DEC 1 983 1138 -155 1307  
SINCE JUL 1 1941 2054 -113 2101  
 
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 14 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 7.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 500 AM  
LOWEST 57 400 PM  
AVERAGE 79  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 42 64 2008  
MINIMUM TEMPERATURE (F) 24 -8 1970  
 
 
SUNRISE AND SUNSET  
JANUARY 8 2019.......SUNRISE 729 AM EST SUNSET 504 PM EST  
JANUARY 9 2019.......SUNRISE 729 AM EST SUNSET 505 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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