637  
CDUS41 KLWX 170529  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1226 AM EST SUN FEB 17 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 16 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 1206 AM 70 1976 47 1 68  
MINIMUM 30 1159 PM 6 2015 26 4 36  
AVERAGE 39 36 3 52  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.33 2003 0.10 -0.10 0.13  
MONTH TO DATE 1.51 1.58 -0.07 3.37  
SINCE DEC 1 11.23 7.22 4.01 5.93  
SINCE JAN 1 5.47 4.26 1.21 5.16  
 
SNOWFALL (IN)  
YESTERDAY 0.0 15.9 2003 0.3 -0.3  
MONTH TO DATE 1.7 4.8 -3.1  
SINCE JUL 1 20.2 16.1 4.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 29 -3 13  
MONTH TO DATE 425 480 -55 427  
SINCE DEC 1 2230 2348 -118 2353  
SINCE JUL 1 3188 3264 -76 3147  
 
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 21 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 12.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 56 1000 PM  
LOWEST 28 100 AM  
AVERAGE 42  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 47 75 1976  
MINIMUM TEMPERATURE (F) 26 -4 1979  
 
 
SUNRISE AND SUNSET  
FEBRUARY 17 2019......SUNRISE 659 AM EST SUNSET 549 PM EST  
FEBRUARY 18 2019......SUNRISE 658 AM EST SUNSET 550 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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