529  
CDUS41 KLWX 150523  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
123 AM EDT WED AUG 15 2018  
 
   
...............................
 
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR AUGUST 14 2018
 
 
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)  
YESTERDAY  
MAXIMUM 87 411 PM 100 2016 87 0 80  
1943  
MINIMUM 69 544 AM 55 1941 70 -1 71  
1893  
AVERAGE 78 78 0 76  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.52 1927 0.09 -0.09 0.00  
MONTH TO DATE 2.37 1.40 0.97 2.85  
SINCE JUN 1 17.31 8.91 8.40 13.13  
SINCE JAN 1 37.28 24.87 12.41 27.92  
 
SNOWFALL (IN)  
YESTERDAY 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  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 1 6 -5 1  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 13 14 -1 11  
MONTH TO DATE 239 196 43 178  
SINCE JUN 1 1075 967 108 1078  
SINCE JAN 1 1335 1101 234 1276    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 8.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 1200 AM  
LOWEST 45 300 PM  
AVERAGE 65  
   
......................................................
 
 
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 103 1988  
MINIMUM TEMPERATURE (F) 70 51 1963  
 
 
SUNRISE AND SUNSET  
AUGUST 15 2018........SUNRISE 622 AM EDT SUNSET 803 PM EDT  
AUGUST 16 2018........SUNRISE 623 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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