303  
CDUS41 KLWX 092124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
423 PM EST SAT FEB 9 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 9 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 34 359 PM 69 2001 45 -11 46  
MINIMUM 25 913 AM -5 1967 25 0 20  
AVERAGE 30 35 -5 33  
 
PRECIPITATION (IN)  
TODAY 0.00 1.07 1970 0.10 -0.10 0.00  
MONTH TO DATE 0.16 0.89 -0.73 1.83  
SINCE DEC 1 9.88 6.53 3.35 4.39  
SINCE JAN 1 4.12 3.57 0.55 3.62  
 
SNOWFALL (IN)  
TODAY 0.0 2.2 2010 0.3 -0.3  
MONTH TO DATE 0.9 2.8 -1.9  
SINCE JUL 1 19.4 14.1 5.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 35 30 5 32  
MONTH TO DATE 236 275 -39 304  
SINCE DEC 1 2041 2143 -102 2230  
SINCE JUL 1 2999 3059 -60 3024  
 
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 26 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 17.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 47 200 AM  
LOWEST 35 300 PM  
AVERAGE 41  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 45 63 2001  
1990  
MINIMUM TEMPERATURE (F) 25 -10 1979  
 
 
SUNRISE AND SUNSET  
FEBRUARY 9 2019......SUNRISE 708 AM EST SUNSET 540 PM EST  
FEBRUARY 10 2019......SUNRISE 707 AM EST SUNSET 541 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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