749  
CDUS41 KLWX 290525  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
125 AM EDT WED MAR 29 2017  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 28 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1962 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 71 337 PM 86 1989 60 11 68  
MINIMUM 53 600 AM 18 2001 37 16 48  
AVERAGE 62 48 14 58  
 
PRECIPITATION (IN)  
YESTERDAY 0.51 1.40 1984 0.12 0.39 0.38  
MONTH TO DATE 2.57 3.00 -0.43 1.45  
SINCE MAR 1 2.57 3.00 -0.43 1.45  
SINCE JAN 1 6.01 8.42 -2.41 9.71  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.3 1996 0.0 0.0  
MONTH TO DATE 5.7 2.7 3.0  
SINCE JUL 1 7.3 21.6 -14.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 3 17 -14 7  
MONTH TO DATE 595 600 -5 408  
SINCE MAR 1 595 600 -5 408  
SINCE JUL 1 3488 4190 -702 3499  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 2 0 2 5  
SINCE MAR 1 2 0 2 5  
SINCE JAN 1 2 0 2 5    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 5.3  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 700 AM  
LOWEST 57 400 PM  
AVERAGE 79  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 61 86 1998  
MINIMUM TEMPERATURE (F) 37 20 1982  
 
 
SUNRISE AND SUNSET  
MARCH 29 2017.........SUNRISE 659 AM EDT SUNSET 731 PM EDT  
MARCH 30 2017.........SUNRISE 657 AM EDT SUNSET 732 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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