AFOS product CLIDCA
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CDUS41 KLWX 170526
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1226 AM EST MON DEC 17 2012


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 16 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         52   1025 PM  74    1971  46      6       62       
  MINIMUM         46    645 AM  10    1917  32     14       43       
  AVERAGE         49                        39     10       53      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.09          1.19 1902   0.09   0.00     0.00    
  MONTH TO DATE    0.38                      1.68  -1.30     3.35    
  SINCE DEC 1      0.38                      1.68  -1.30     3.35    
  SINCE JAN 1     29.80                     38.37  -8.57    45.34    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           6.0  1973   0.0    0.0              
  MONTH TO DATE    0.0                       1.0   -1.0              
  SINCE JUL 1      T                         1.5   -1.5              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       16                        26    -10       12       
  MONTH TO DATE  262                       375   -113      315       
  SINCE DEC 1    262                       375   -113      315       
  SINCE JUL 1    973                      1070    -97      910       
                                                                     
 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     9   HIGHEST WIND DIRECTION    SE (130)      
  HIGHEST GUST SPEED    12   HIGHEST GUST DIRECTION    SE (130)      
  AVERAGE WIND SPEED     3.8                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 1.0                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    93           900 PM                                     
 LOWEST     61          1200 AM                                     
 AVERAGE    77                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   46        64      1984                    
                                             1939                    
 MINIMUM TEMPERATURE (F)   32        10      1876                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 17 2012......SUNRISE   721 AM EST   SUNSET   448 PM EST   
DECEMBER 18 2012......SUNRISE   722 AM EST   SUNSET   448 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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