801  
CDUS41 KLWX 220533  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1232 AM EST FRI FEB 22 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 21 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 54 515 PM 80 2018 48 6 80  
MINIMUM 31 758 AM 7 1972 27 4 59  
1968  
AVERAGE 43 37 6 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.93 2015 0.10 -0.10 0.02  
MONTH TO DATE 2.87 2.07 0.80 3.87  
SINCE DEC 1 12.59 7.71 4.88 6.43  
SINCE JAN 1 6.83 4.75 2.08 5.66  
 
SNOWFALL (IN)  
YESTERDAY 0.0 8.9 2015 0.2 -0.2  
MONTH TO DATE 6.4 6.1 0.3  
SINCE JUL 1 24.9 17.4 7.5  
SNOW DEPTH 3  
 
DEGREE DAYS  
HEATING  
YESTERDAY 22 28 -6 0  
MONTH TO DATE 569 621 -52 506  
SINCE DEC 1 2374 2489 -115 2432  
SINCE JUL 1 3332 3405 -73 3226  
 
COOLING  
YESTERDAY 0 0 0 5  
MONTH TO DATE 0 0 0 5  
SINCE DEC 1 0 0 0 5  
SINCE JAN 1 0 0 0 5    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 2.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 800 AM  
LOWEST 35 500 PM  
AVERAGE 68  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 48 71 1991  
MINIMUM TEMPERATURE (F) 27 4 1968  
 
 
SUNRISE AND SUNSET  
FEBRUARY 22 2019......SUNRISE 652 AM EST SUNSET 555 PM EST  
FEBRUARY 23 2019......SUNRISE 651 AM EST SUNSET 556 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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