797  
CDUS41 KLWX 280527  
CLIDCA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
125 AM EDT FRI APR 28 2017  
 
   
...............................
 
 
   
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR APRIL 27 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 83 305 PM 95 1915 70 13 71  
MINIMUM 58 550 AM 38 1933 51 7 53  
1892  
1876  
AVERAGE 71 60 11 62  
 
PRECIPITATION (IN)  
YESTERDAY T 1.64 1954 0.10 -0.10 0.03  
MONTH TO DATE 2.62 2.74 -0.12 1.44  
SINCE MAR 1 5.81 6.22 -0.41 2.60  
SINCE JAN 1 9.24 11.65 -2.41 9.07  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2001 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 6 -6 3  
MONTH TO DATE 123 253 -130 233  
SINCE MAR 1 671 821 -150 584  
SINCE JUL 1 3047 3929 -882 3185  
 
COOLING  
YESTERDAY 6 1 5 0  
MONTH TO DATE 56 18 38 33  
SINCE MAR 1 61 20 41 36  
SINCE JAN 1 62 20 42 36    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 8.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 700 AM  
LOWEST 54 700 PM  
AVERAGE 76  
   
......................................................
 
 
 
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 92 1957  
MINIMUM TEMPERATURE (F) 51 33 1898  
 
 
SUNRISE AND SUNSET  
APRIL 28 2017.........SUNRISE 614 AM EDT SUNSET 758 PM EDT  
APRIL 29 2017.........SUNRISE 613 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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