568  
CDUS41 KLWX 080527  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
126 AM EDT MON APR 8 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 7 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 72 1249 PM 91 2010 64 8 58  
MINIMUM 45 416 AM 21 1977 40 5 36  
AVERAGE 59 52 7 47  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 1.33 1988 0.12 -0.11 T  
MONTH TO DATE 0.36 0.84 -0.48 0.15  
SINCE MAR 1 4.91 4.22 0.69 1.94  
SINCE JAN 1 12.37 9.64 2.73 8.33  
 
SNOWFALL (IN)  
YESTERDAY 0.0 1.1 1990 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1  
SINCE JUL 1 26.5 21.8 4.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 6 14 -8 18  
MONTH TO DATE 114 103 11 107  
SINCE MAR 1 798 750 48 886  
SINCE JUL 1 4303 4340 -37 4237  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 3 -3 0  
SINCE JAN 1 0 3 -3 5    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 6.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 300 AM  
LOWEST 49 1100 AM  
AVERAGE 71  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 64 87 1991  
MINIMUM TEMPERATURE (F) 40 24 1970  
 
 
SUNRISE AND SUNSET  
APRIL 8 2019.........SUNRISE 644 AM EDT SUNSET 740 PM EDT  
APRIL 9 2019.........SUNRISE 643 AM EDT SUNSET 741 PM EDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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