734  
CDUS41 KLWX 102124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT WED APR 10 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 10 2019
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 70 352 PM 89 2013 65 5 53  
MINIMUM 43 349 AM 19 1985 41 2 34  
AVERAGE 57 53 4 44  
 
PRECIPITATION (IN)  
TODAY 0.00 0.84 1983 0.12 -0.12 0.00  
MONTH TO DATE 0.38 1.21 -0.83 0.15  
SINCE MAR 1 4.93 4.59 0.34 1.94  
SINCE JAN 1 12.39 10.01 2.38 8.33  
 
SNOWFALL (IN)  
TODAY 0.0 T 1996 0.0 0.0  
1973  
MONTH TO DATE 0.0 0.2 -0.2  
SINCE JUL 1 26.5 21.9 4.6  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 8 13 -5 21  
MONTH TO DATE 122 142 -20 178  
SINCE MAR 1 806 789 17 957  
SINCE JUL 1 4311 4379 -68 4308  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 8 0 8 0  
SINCE MAR 1 8 3 5 0  
SINCE JAN 1 8 3 5 5    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 9.7  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 58 300 AM  
LOWEST 23 400 PM  
AVERAGE 41  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 87 1977  
MINIMUM TEMPERATURE (F) 41 25 1971  
1970  
1960  
 
 
SUNRISE AND SUNSET  
APRIL 10 2019.........SUNRISE 641 AM EDT SUNSET 742 PM EDT  
APRIL 11 2019.........SUNRISE 640 AM EDT SUNSET 743 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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