722  
CDUS41 KLWX 140521  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1221 AM EST THU FEB 14 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 13 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 48 227 PM 65 1974 46 2 42  
MINIMUM 32 858 PM -8 1983 26 6 25  
AVERAGE 40 36 4 34  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.29 1972 0.10 -0.10 T  
MONTH TO DATE 1.51 1.28 0.23 3.16  
SINCE DEC 1 11.23 6.92 4.31 5.72  
SINCE JAN 1 5.47 3.96 1.51 4.95  
 
SNOWFALL (IN)  
YESTERDAY 0.0 11.7 2014 0.3 -0.3  
MONTH TO DATE 1.7 4.0 -2.3  
SINCE JUL 1 20.2 15.3 4.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 25 29 -4 31  
MONTH TO DATE 363 393 -30 388  
SINCE DEC 1 2168 2261 -93 2314  
SINCE JUL 1 3126 3177 -51 3108  
 
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 24 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 8.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 100 AM  
LOWEST 40 500 PM  
AVERAGE 66  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 46 71 1990  
MINIMUM TEMPERATURE (F) 26 -5 1979  
 
 
SUNRISE AND SUNSET  
FEBRUARY 14 2019......SUNRISE 703 AM EST SUNSET 546 PM EST  
FEBRUARY 15 2019......SUNRISE 701 AM EST SUNSET 547 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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