856  
CDUS41 KLWX 152124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT MON JUL 15 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 15 2019
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 91 359 PM 98 1995 88 3 88  
MINIMUM 64 529 AM 53 1987 66 -2 69  
1981  
AVERAGE 78 77 1 79  
 
PRECIPITATION (IN)  
TODAY 0.00 1.01 2005 0.12 -0.12 T  
MONTH TO DATE 1.54 1.78 -0.24 0.85  
SINCE JUN 1 3.98 5.76 -1.78 5.02  
SINCE JAN 1 23.86 22.58 1.28 25.67  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 9 15 -6 5  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 13 12 1 14  
MONTH TO DATE 204 175 29 196  
SINCE JUN 1 460 412 48 437  
SINCE JAN 1 639 504 135 629    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 5.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 500 AM  
LOWEST 37 1100 AM  
AVERAGE 61  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 104 1988  
MINIMUM TEMPERATURE (F) 66 57 1991  
1967  
1966  
 
 
SUNRISE AND SUNSET  
JULY 15 2019..........SUNRISE 556 AM EDT SUNSET 835 PM EDT  
JULY 16 2019..........SUNRISE 557 AM EDT SUNSET 834 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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