737  
CDUS41 KLWX 110538  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1237 AM EST MON FEB 11 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 10 2019
 
 
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)  
YESTERDAY  
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)  
YESTERDAY 0.12 0.65 1970 0.10 0.02 0.51  
MONTH TO DATE 0.28 0.99 -0.71 2.34  
SINCE DEC 1 10.00 6.63 3.37 4.90  
SINCE JAN 1 4.24 3.67 0.57 4.13  
 
SNOWFALL (IN)  
YESTERDAY 0.8 7.1 2010 0.3 0.5  
MONTH TO DATE 1.7 3.1 -1.4  
SINCE JUL 1 20.2 14.4 5.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 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  
YESTERDAY 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 (180)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 3.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
SNOW  
LIGHT SNOW  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 1100 PM  
LOWEST 35 200 PM  
AVERAGE 64  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 45 71 2009  
MINIMUM TEMPERATURE (F) 25 -7 1979  
 
 
SUNRISE AND SUNSET  
FEBRUARY 11 2019......SUNRISE 706 AM EST SUNSET 542 PM EST  
FEBRUARY 12 2019......SUNRISE 705 AM EST SUNSET 544 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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