310  
CDUS41 KLWX 132141  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
438 PM EST SUN JAN 13 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 13 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 30 328 PM 69 2005 42 -12 61  
MINIMUM 27 851 AM -3 1981 24 3 19  
1977  
AVERAGE 29 33 -4 40  
 
PRECIPITATION (IN)  
TODAY 0.35 1.03 1964 0.08 0.27 0.55  
MONTH TO DATE 0.82 1.07 -0.25 1.53  
SINCE DEC 1 6.58 4.03 2.55 2.30  
SINCE JAN 1 0.82 1.07 -0.25 1.53  
 
SNOWFALL (IN)  
TODAY 4.2 6.0 1964 0.3 3.9  
MONTH TO DATE 7.1 2.5 4.6  
SINCE JUL 1 10.1 6.5 3.6  
SNOW DEPTH 5  
 
DEGREE DAYS  
HEATING  
TODAY 36 32 4 25  
MONTH TO DATE 344 416 -72 487  
SINCE DEC 1 1148 1298 -150 1410  
SINCE JUL 1 2106 2214 -108 2204  
 
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 N (10)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 6.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
SNOW  
LIGHT SNOW  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 85 100 PM  
AVERAGE 93  
   
......................................................
 
 
 
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 2019.......SUNRISE 728 AM EST SUNSET 509 PM EST  
JANUARY 14 2019.......SUNRISE 727 AM EST SUNSET 511 PM EST  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab VA Page
The Nexlab MD Page
The Nexlab WV Page Main Text Page