AFOS product CLIDCA
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CDUS41 KLWX 180524
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1224 AM EST FRI DEC 18 2015


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 17 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         54    855 PM  64    1984  46      8       58       
                                      1939                          
  MINIMUM         47    326 AM  10    1876  32     15       40       
  AVERAGE         51                        39     12       49      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.42          2.43 1888   0.10   0.32     0.00    
  MONTH TO DATE    1.62                      1.78  -0.16     2.08    
  SINCE DEC 1      1.62                      1.78  -0.16     2.08    
  SINCE JAN 1     41.80                     38.47   3.33    42.99    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0          11.5  1932   0.1   -0.1              
  MONTH TO DATE    0.0                       1.1   -1.1              
  SINCE JUL 1      0.0                       1.6   -1.6              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       14                        26    -12       16       
  MONTH TO DATE  245                       401   -156      343       
  SINCE DEC 1    245                       401   -156      343       
  SINCE JUL 1    780                      1096   -316      950       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1998                      1549    449     1712       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION    NW (320)      
  HIGHEST GUST SPEED    13   HIGHEST GUST DIRECTION    NW (320)      
  AVERAGE WIND SPEED     3.5                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           200 PM                                     
 LOWEST     86          1200 AM                                     
 AVERAGE    93                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   46        74      2006                    
 MINIMUM TEMPERATURE (F)   32        10      1926                    
                                             1919                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 18 2015......SUNRISE   721 AM EST   SUNSET   448 PM EST   
DECEMBER 19 2015......SUNRISE   722 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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