686  
CDUS41 KLWX 290530  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
126 AM EDT MON APR 29 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 28 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 74 133 PM 88 1990 71 3 77  
1983  
1981  
MINIMUM 45 1159 PM 32 1993 46 -1 43  
1972  
AVERAGE 60 58 2 60  
 
PRECIPITATION (IN)  
YESTERDAY 0.02 1.68 2002 0.12 -0.10 0.01  
MONTH TO DATE 2.82 3.24 -0.42 3.55  
SINCE MAR 1 7.37 6.62 0.75 5.34  
SINCE JAN 1 14.83 12.04 2.79 11.73  
 
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 5 8 -3 5  
MONTH TO DATE 182 323 -141 377  
SINCE MAR 1 866 970 -104 1156  
SINCE JUL 1 4371 4560 -189 4507  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 19 16 3 15  
SINCE MAR 1 19 19 0 15  
SINCE JAN 1 19 19 0 20    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 10.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 300 AM  
LOWEST 53 100 PM  
AVERAGE 71  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 89 2017  
MINIMUM TEMPERATURE (F) 46 32 1987  
 
 
SUNRISE AND SUNSET  
APRIL 29 2019.........SUNRISE 615 AM EDT SUNSET 800 PM EDT  
APRIL 30 2019.........SUNRISE 613 AM EDT SUNSET 801 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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