696  
CDUS41 KLWX 270537  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
127 AM EDT SAT APR 27 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 26 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 1236 PM 92 2009 70 5 71  
1990  
MINIMUM 53 1159 PM 31 1967 45 8 44  
AVERAGE 64 58 6 58  
 
PRECIPITATION (IN)  
YESTERDAY 0.41 0.93 2004 0.12 0.29 0.00  
MONTH TO DATE 2.75 3.00 -0.25 2.70  
SINCE MAR 1 7.30 6.38 0.92 4.49  
SINCE JAN 1 14.76 11.80 2.96 10.88  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2002 0.0 0.0  
2001  
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 1 8 -7 7  
MONTH TO DATE 172 307 -135 364  
SINCE MAR 1 856 954 -98 1143  
SINCE JUL 1 4361 4544 -183 4494  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 19 14 5 15  
SINCE MAR 1 19 17 2 15  
SINCE JAN 1 19 17 2 20    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 33 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 52 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 10.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 500 AM  
LOWEST 51 800 PM  
AVERAGE 72  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 92 2009  
1990  
MINIMUM TEMPERATURE (F) 45 31 1987  
1972  
 
 
SUNRISE AND SUNSET  
APRIL 27 2019.........SUNRISE 617 AM EDT SUNSET 758 PM EDT  
APRIL 28 2019.........SUNRISE 616 AM EDT SUNSET 759 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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