AFOS product CLIDCA
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CDUS41 KLWX 130522
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1222 AM EST THU DEC 13 2012


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 12 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         47    306 PM  71    1873  48     -1       46       
  MINIMUM         39    732 AM  13    1988  33      6       29       
                                      1957                          
  AVERAGE         43                        40      3       38      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.36 1959   0.11  -0.11     0.00    
  MONTH TO DATE    0.29                      1.30  -1.01     3.34    
  SINCE DEC 1      0.29                      1.30  -1.01     3.34    
  SINCE JAN 1     29.71                     37.99  -8.28    45.33    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           6.6  1982   0.0    0.0              
  MONTH TO DATE    0.0                       0.7   -0.7              
  SINCE JUL 1      T                         1.2   -1.2              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       22                        25     -3       27       
  MONTH TO DATE  181                       274    -93      246       
  SINCE DEC 1    181                       274    -93      246       
  SINCE JUL 1    892                       969    -77      841       
                                                                     
 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    NE (30)       
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION    NE (30)       
  AVERAGE WIND SPEED     7.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    64           800 AM                                     
 LOWEST     42           100 PM                                     
 AVERAGE    53                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   47        71      1889                    
 MINIMUM TEMPERATURE (F)   33        11      1960                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 13 2012......SUNRISE   718 AM EST   SUNSET   447 PM EST   
DECEMBER 14 2012......SUNRISE   719 AM EST   SUNSET   447 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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