877  
CDUS41 KLWX 250525  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
124 AM EDT THU APR 25 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 24 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 75 343 PM 85 2011 70 5 62  
1994  
1990  
MINIMUM 57 1030 PM 30 1989 45 12 53  
AVERAGE 66 57 9 58  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.25 1983 0.12 -0.12 0.43  
MONTH TO DATE 2.24 2.77 -0.53 2.06  
SINCE MAR 1 6.79 6.15 0.64 3.85  
SINCE JAN 1 14.25 11.57 2.68 10.24  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.3 -0.3  
SINCE JUL 1 26.5 22.0 4.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 9 -9 7  
MONTH TO DATE 170 290 -120 350  
SINCE MAR 1 854 937 -83 1129  
SINCE JUL 1 4359 4527 -168 4480  
 
COOLING  
YESTERDAY 1 1 0 0  
MONTH TO DATE 19 12 7 15  
SINCE MAR 1 19 15 4 15  
SINCE JAN 1 19 15 4 20    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 7.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 100 AM  
LOWEST 27 200 PM  
AVERAGE 53  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 93 1960  
MINIMUM TEMPERATURE (F) 45 29 1969  
 
 
SUNRISE AND SUNSET  
APRIL 25 2019.........SUNRISE 620 AM EDT SUNSET 756 PM EDT  
APRIL 26 2019.........SUNRISE 618 AM EDT SUNSET 757 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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