282  
CDUS41 KLWX 180534  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1228 AM EST MON FEB 18 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 17 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 39 343 PM 75 1976 47 -8 42  
MINIMUM 23 732 AM -4 1979 26 -3 29  
AVERAGE 31 36 -5 36  
 
PRECIPITATION (IN)  
YESTERDAY 0.24 1.36 1998 0.10 0.14 0.44  
MONTH TO DATE 1.75 1.68 0.07 3.81  
SINCE DEC 1 11.47 7.32 4.15 6.37  
SINCE JAN 1 5.71 4.36 1.35 5.60  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.1 1967 0.3 -0.3  
MONTH TO DATE 1.7 5.1 -3.4  
SINCE JUL 1 20.2 16.4 3.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 34 29 5 29  
MONTH TO DATE 459 509 -50 456  
SINCE DEC 1 2264 2377 -113 2382  
SINCE JUL 1 3222 3293 -71 3176  
 
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 20 HIGHEST WIND DIRECTION S (170)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 6.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 1100 PM  
LOWEST 52 200 PM  
AVERAGE 74  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 47 75 2011  
MINIMUM TEMPERATURE (F) 26 -14 1979  
 
 
SUNRISE AND SUNSET  
FEBRUARY 18 2019......SUNRISE 658 AM EST SUNSET 550 PM EST  
FEBRUARY 19 2019......SUNRISE 656 AM EST SUNSET 551 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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