129  
CDUS41 KLWX 100528  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1227 AM EST SUN FEB 10 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 9 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 34 440 PM 69 2001 45 -11 46  
MINIMUM 20 1154 PM -5 1967 25 -5 20  
AVERAGE 27 35 -8 33  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.07 1970 0.10 -0.10 0.00  
MONTH TO DATE 0.16 0.89 -0.73 1.83  
SINCE DEC 1 9.88 6.53 3.35 4.39  
SINCE JAN 1 4.12 3.57 0.55 3.62  
 
SNOWFALL (IN)  
YESTERDAY 0.0 2.2 2010 0.3 -0.3  
MONTH TO DATE 0.9 2.8 -1.9  
SINCE JUL 1 19.4 14.1 5.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 38 30 8 32  
MONTH TO DATE 239 275 -36 304  
SINCE DEC 1 2044 2143 -99 2230  
SINCE JUL 1 3002 3059 -57 3024  
 
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 26 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 12.5  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 68 1100 PM  
LOWEST 32 500 PM  
AVERAGE 50  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 45 63 2001  
1990  
MINIMUM TEMPERATURE (F) 25 -10 1979  
 
 
SUNRISE AND SUNSET  
FEBRUARY 10 2019......SUNRISE 707 AM EST SUNSET 541 PM EST  
FEBRUARY 11 2019......SUNRISE 706 AM EST SUNSET 542 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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