AFOS product CLIDCA
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CDUS41 KLWX 190537
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1237 AM EST MON DEC 19 2016


................................... 

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 18 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         67    146 PM  74    2006  46     21       52       
  MINIMUM         36   1159 PM  10    1926  32      4       35       
                                      1919                          
  AVERAGE         52                        39     13       44      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.01          2.81 1977   0.09  -0.08     0.00    
  MONTH TO DATE    1.83                      1.87  -0.04     1.62    
  SINCE DEC 1      1.83                      1.87  -0.04     1.62    
  SINCE JAN 1     30.92                     38.56  -7.64    41.80    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           3.0  1945   0.1   -0.1              
                                      1916                          
  MONTH TO DATE    T                         1.2   -1.2              
  SINCE JUL 1      T                         1.7   -1.7              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       13                        26    -13       21       
  MONTH TO DATE  411                       427    -16      266       
  SINCE DEC 1    411                       427    -16      266       
  SINCE JUL 1    898                      1122   -224      801       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1994                      1549    445     1998       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    45   HIGHEST WIND DIRECTION    NW (330)      
  HIGHEST GUST SPEED    54   HIGHEST GUST DIRECTION    NW (330)      
  AVERAGE WIND SPEED    16.7                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93          1200 AM                                     
 LOWEST     52          1100 PM                                     
 AVERAGE    73                                                       

..........................................................

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   46        74      1924                    
 MINIMUM TEMPERATURE (F)   32         6      1884                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 19 2016......SUNRISE   722 AM EST   SUNSET   449 PM EST   
DECEMBER 20 2016......SUNRISE   723 AM EST   SUNSET   449 PM EST   

                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          




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