480  
CDUS41 KLWX 182127  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
425 PM EST MON FEB 18 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 18 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 48 1209 PM 75 2011 47 1 50  
MINIMUM 35 726 AM -14 1979 26 9 31  
AVERAGE 42 37 5 41  
 
PRECIPITATION (IN)  
TODAY 0.17 1.29 1964 0.10 0.07 T  
MONTH TO DATE 1.92 1.78 0.14 3.81  
SINCE DEC 1 11.64 7.42 4.22 6.37  
SINCE JAN 1 5.88 4.46 1.42 5.60  
 
SNOWFALL (IN)  
TODAY 0.0 2.5 1979 0.3 -0.3  
1964  
MONTH TO DATE 1.7 5.4 -3.7  
SINCE JUL 1 20.2 16.7 3.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 23 28 -5 24  
MONTH TO DATE 482 537 -55 480  
SINCE DEC 1 2287 2405 -118 2406  
SINCE JUL 1 3245 3321 -76 3200  
 
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 28 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 11.7  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 1200 AM  
LOWEST 49 100 PM  
AVERAGE 71  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 47 71 1997  
MINIMUM TEMPERATURE (F) 27 6 2015  
 
 
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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