725  
CDUS41 KLWX 200530  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
129 AM EDT SAT APR 20 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 19 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 74 1102 AM 91 2002 68 6 58  
MINIMUM 64 925 PM 27 2001 43 21 38  
1990  
AVERAGE 69 56 13 48  
 
PRECIPITATION (IN)  
YESTERDAY 1.26R 1.20 2013 0.11 1.15 0.01  
MONTH TO DATE 2.23 2.20 0.03 1.63  
SINCE MAR 1 6.78 5.58 1.20 3.42  
SINCE JAN 1 14.24 11.00 3.24 9.81  
 
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 0 10 -10 17  
MONTH TO DATE 157 243 -86 287  
SINCE MAR 1 841 890 -49 1066  
SINCE JUL 1 4346 4480 -134 4417  
 
COOLING  
YESTERDAY 4 1 3 0  
MONTH TO DATE 18 7 11 15  
SINCE MAR 1 18 10 8 15  
SINCE JAN 1 18 10 8 20    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 13.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 200 PM  
LOWEST 53 1200 AM  
AVERAGE 73  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 88 1985  
1976  
MINIMUM TEMPERATURE (F) 43 28 1974  
 
 
SUNRISE AND SUNSET  
APRIL 20 2019.........SUNRISE 627 AM EDT SUNSET 752 PM EDT  
APRIL 21 2019.........SUNRISE 625 AM EDT SUNSET 753 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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