533  
CDUS41 KLWX 172136  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
536 PM EDT FRI AUG 17 2018  
 
   
...............................
 
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR AUGUST 17 2018
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1871 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 94 212 PM 105 1997 87 7  
MINIMUM 78 639 AM 51 1902 70 8  
AVERAGE 86 78 8 83  
 
PRECIPITATION (IN)  
TODAY 0.00 2.39 1879 0.09 -0.09  
MONTH TO DATE 2.37 1.68 0.69  
SINCE JUN 1 17.31 9.19 8.12  
SINCE JAN 1 37.28 25.15 12.13  
 
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  
MONTH TO DATE 0 0  
SINCE JUN 1 1 -5  
SINCE JUL 1 0 0  
 
COOLING  
TODAY 21 8  
MONTH TO DATE 294 59  
SINCE JUN 1 1130 124  
SINCE JAN 1 1390 250    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 8.6  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85  
LOWEST 52  
AVERAGE 69  
   
......................................................
 
 
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 98 2002  
MINIMUM TEMPERATURE (F) 70 54 1902  
 
 
SUNRISE AND SUNSET  
AUGUST 17 2018........SUNRISE 624 AM EDT SUNSET 800 PM EDT  
AUGUST 18 2018........SUNRISE 625 AM EDT SUNSET 759 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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