952  
CDUS41 KLWX 132125  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
524 PM EDT FRI JUL 13 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 13 2018
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 86 350 PM 97 1986 88 -2 94  
1966  
MINIMUM 63 536 AM 52 1978 66 -3 71  
AVERAGE 75 77 -2 83  
 
PRECIPITATION (IN)  
TODAY 0.00 1.30 1975 0.12 -0.12 0.00  
MONTH TO DATE 0.85 1.54 -0.69 3.16  
SINCE JUN 1 5.02 5.52 -0.50 4.44  
SINCE JAN 1 25.67 22.34 3.33 23.53  
 
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 5 15 -10 6  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 10 12 -2 18  
MONTH TO DATE 171 151 20 175  
SINCE JUN 1 412 388 24 431  
SINCE JAN 1 604 480 124 568    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 3.7  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 300 AM  
LOWEST 40 1200 PM  
AVERAGE 70  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 98 1993  
MINIMUM TEMPERATURE (F) 66 53 2009  
 
 
SUNRISE AND SUNSET  
JULY 13 2018..........SUNRISE 555 AM EDT SUNSET 836 PM EDT  
JULY 14 2018..........SUNRISE 556 AM EDT SUNSET 835 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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