131  
CDUS41 KLWX 012123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
422 PM EST TUE JAN 1 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 1 2019
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 62 804 AM 68 2005 43 19 23  
MINIMUM 47 1212 AM -6 1968 24 23 6  
AVERAGE 55 33 22 15  
 
PRECIPITATION (IN)  
TODAY 0.00 1.73 2003 0.08 -0.08 0.00  
MONTH TO DATE 0.00 0.08 -0.08 0.00  
SINCE DEC 1 5.76 3.04 2.72 0.77  
SINCE JAN 1 0.00 0.08 -0.08 0.00  
 
SNOWFALL (IN)  
TODAY 0.0 6.9 1971 0.2 -0.2  
MONTH TO DATE 0.0 0.2 -0.2  
SINCE JUL 1 3.0 4.2 -1.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 10 32 -22 50  
MONTH TO DATE 10 32 -22 50  
SINCE DEC 1 814 914 -100 973  
SINCE JUL 1 1772 1830 -58 1767  
 
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 30 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 14.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 57 1200 PM  
AVERAGE 79  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 43 67 2000  
MINIMUM TEMPERATURE (F) 24 -7 1968  
 
 
SUNRISE AND SUNSET  
JANUARY 1 2019.......SUNRISE 729 AM EST SUNSET 458 PM EST  
JANUARY 2 2019.......SUNRISE 729 AM EST SUNSET 459 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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