AFOS product CLIDCA
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CDUS41 KLWX 210526
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1226 AM EST WED DEC 21 2016


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 20 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         37    357 PM  66    1889  45     -8       46       
                                      1877                          
  MINIMUM         26    751 AM   5    1942  31     -5       32       
  AVERAGE         32                        38     -6       39      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.56 1957   0.09  -0.09     0.00    
  MONTH TO DATE    1.83                      2.06  -0.23     1.62    
  SINCE DEC 1      1.83                      2.06  -0.23     1.62    
  SINCE JAN 1     30.92                     38.75  -7.83    41.80    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           5.0  1892   0.1   -0.1              
  MONTH TO DATE    T                         1.3   -1.3              
  SINCE JUL 1      T                         1.8   -1.8              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       33                        27      6       26       
  MONTH TO DATE  474                       480     -6      319       
  SINCE DEC 1    474                       480     -6      319       
  SINCE JUL 1    961                      1175   -214      854       
                                                                     
 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    10   HIGHEST WIND DIRECTION    NE (40)       
  HIGHEST GUST SPEED    12   HIGHEST GUST DIRECTION    NE (30)       
  AVERAGE WIND SPEED     5.1                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.3                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    72          1100 PM                                     
 LOWEST     44           100 PM                                     
 AVERAGE    58                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   45        72      2013                    
 MINIMUM TEMPERATURE (F)   31         4      1942                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 21 2016......SUNRISE   723 AM EST   SUNSET   450 PM EST   
DECEMBER 22 2016......SUNRISE   724 AM EST   SUNSET   450 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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