311  
CDUS41 KLWX 290525  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
123 AM EDT THU JUN 29 2017  
 
   
...............................
 
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR JUNE 28 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1871 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 83 345 PM 100 1969 87 -4 87  
MINIMUM 61 539 AM 54 1927 70 -9 69  
AVERAGE 72 78 -6 78  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.95 1914 0.13 -0.13 0.87  
MONTH TO DATE 1.13 3.53 -2.40 3.68  
SINCE JUN 1 1.13 3.53 -2.40 3.68  
SINCE JAN 1 15.92 19.49 -3.57 19.01  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 3.4 15.4 -12.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 1 5 -4 0  
SINCE JUN 1 1 5 -4 0  
SINCE JUL 1 3122 4030 -908 3340  
 
COOLING  
YESTERDAY 7 14 -7 13  
MONTH TO DATE 344 286 58 325  
SINCE JUN 1 344 286 58 325  
SINCE JAN 1 542 420 122 453    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 7.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 67 500 AM  
LOWEST 28 300 PM  
AVERAGE 48  
   
......................................................
 
 
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 104 2012  
MINIMUM TEMPERATURE (F) 70 54 1888  
 
 
SUNRISE AND SUNSET  
JUNE 29 2017..........SUNRISE 546 AM EDT SUNSET 837 PM EDT  
JUNE 30 2017..........SUNRISE 546 AM EDT SUNSET 837 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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