775  
CDUS41 KLWX 120523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1223 AM EST TUE FEB 12 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 11 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 36 401 PM 71 2009 45 -9 67  
MINIMUM 32 630 AM -7 1979 25 7 43  
AVERAGE 34 35 -1 55  
 
PRECIPITATION (IN)  
YESTERDAY 0.41 2.07 1983 0.10 0.31 0.80  
MONTH TO DATE 0.69 1.09 -0.40 3.14  
SINCE DEC 1 10.41 6.73 3.68 5.70  
SINCE JAN 1 4.65 3.77 0.88 4.93  
 
SNOWFALL (IN)  
YESTERDAY 0.0 22.5 1983 0.3 -0.3  
MONTH TO DATE 1.7 3.4 -1.7  
SINCE JUL 1 20.2 14.7 5.5  
SNOW DEPTH T  
 
DEGREE DAYS  
HEATING  
YESTERDAY 31 30 1 10  
MONTH TO DATE 308 335 -27 340  
SINCE DEC 1 2113 2203 -90 2266  
SINCE JUL 1 3071 3119 -48 3060  
 
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 10 HIGHEST WIND DIRECTION E (80)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 4.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
LT FREEZING RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 700 PM  
LOWEST 89 600 AM  
AVERAGE 93  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 46 74 1999  
MINIMUM TEMPERATURE (F) 25 3 1964  
 
 
SUNRISE AND SUNSET  
FEBRUARY 12 2019......SUNRISE 705 AM EST SUNSET 544 PM EST  
FEBRUARY 13 2019......SUNRISE 704 AM EST SUNSET 545 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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