453  
CDUS41 KLWX 102123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
423 PM EST SUN FEB 10 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 10 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 39 241 PM 63 2001 45 -6 46  
1990  
MINIMUM 15 717 AM -10 1979 25 -10 31  
AVERAGE 27 35 -8 39  
 
PRECIPITATION (IN)  
TODAY 0.00 0.65 1970 0.10 -0.10 0.51  
MONTH TO DATE 0.16 0.99 -0.83 2.34  
SINCE DEC 1 9.88 6.63 3.25 4.90  
SINCE JAN 1 4.12 3.67 0.45 4.13  
 
SNOWFALL (IN)  
TODAY 0.0 7.1 2010 0.3 -0.3  
MONTH TO DATE 0.9 3.1 -2.2  
SINCE JUL 1 19.4 14.4 5.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 38 30 8 26  
MONTH TO DATE 277 305 -28 330  
SINCE DEC 1 2082 2173 -91 2256  
SINCE JUL 1 3040 3089 -49 3050  
 
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 S (190)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 3.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 700 AM  
LOWEST 35 200 PM  
AVERAGE 62  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 45 71 2009  
MINIMUM TEMPERATURE (F) 25 -7 1979  
 
 
SUNRISE AND SUNSET  
FEBRUARY 10 2019......SUNRISE 707 AM EST SUNSET 541 PM EST  
FEBRUARY 11 2019......SUNRISE 706 AM EST SUNSET 542 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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