484  
CDUS41 KLWX 050523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1223 AM EST TUE FEB 5 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR FEBRUARY 4 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 63 350 PM 70 1991 44 19 34  
MINIMUM 27 742 AM 4 1996 25 2 30  
1965  
AVERAGE 45 34 11 32  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.17 1998 0.10 -0.10 1.13  
MONTH TO DATE 0.07 0.40 -0.33 1.34  
SINCE DEC 1 9.79 6.04 3.75 3.90  
SINCE JAN 1 4.03 3.08 0.95 3.13  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.2 1995 0.3 -0.3  
MONTH TO DATE 0.9 1.3 -0.4  
SINCE JUL 1 19.4 12.6 6.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 20 31 -11 33  
MONTH TO DATE 135 124 11 134  
SINCE DEC 1 1940 1992 -52 2060  
SINCE JUL 1 2898 2908 -10 2854  
 
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 8 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 2.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 43 300 PM  
AVERAGE 72  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 44 73 1991  
MINIMUM TEMPERATURE (F) 25 -10 1996  
 
 
SUNRISE AND SUNSET  
FEBRUARY 5 2019......SUNRISE 712 AM EST SUNSET 536 PM EST  
FEBRUARY 6 2019......SUNRISE 711 AM EST SUNSET 537 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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