AFOS product CLIDCA
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CDUS41 KLWX 090520
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1220 AM EST SUN DEC 9 2012


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 8 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2012


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         54    353 PM  74    1978  49      5       45       
  MINIMUM         48    902 PM   8    1882  34     14       35       
  AVERAGE         51                        42      9       40      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.35 1972   0.10  -0.10     0.00    
  MONTH TO DATE    0.07                      0.86  -0.79     3.34    
  SINCE DEC 1      0.07                      0.86  -0.79     3.34    
  SINCE JAN 1     29.49                     37.55  -8.06    45.33    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           3.6  1989   0.1   -0.1              
  MONTH TO DATE    0.0                       0.5   -0.5              
  SINCE JUL 1      T                         1.0   -1.0              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       14                        23     -9       25       
  MONTH TO DATE  123                       177    -54      143       
  SINCE DEC 1    123                       177    -54      143       
  SINCE JUL 1    834                       872    -38      738       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1975                      1549    426     1925       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     S (170)      
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     W (270)      
  AVERAGE WIND SPEED     4.4                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100           700 AM                                     
 LOWEST     83           300 PM                                     
 AVERAGE    92                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   49        71      1991                    
 MINIMUM TEMPERATURE (F)   34         4      1876                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER  9 2012......SUNRISE   715 AM EST   SUNSET   446 PM EST   
DECEMBER 10 2012......SUNRISE   716 AM EST   SUNSET   446 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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