AFOS product CLIDCA
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CDUS41 KLWX 130539
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
139 AM EDT THU SEP 13 2012


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 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         81    320 PM  96    1931  81      0       83       
                                      1895                          
  MINIMUM         60    623 AM  41    1917  64     -4       65       
  AVERAGE         71                        72     -1       74      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          4.02 1934   0.12  -0.12     0.00    
  MONTH TO DATE    2.44                      1.35   1.09     7.11    
  SINCE SEP 1      2.44                      1.35   1.09     7.11    
  SINCE JAN 1     21.15                     27.75  -6.60    34.41    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0          MM      MM   0.0    0.0              
  MONTH TO DATE    0.0                       0.0    0.0              
  SINCE JUL 1      0.0                       0.0    0.0              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE SEP 1      0                         0      0        0       
  SINCE JUL 1      0                         0      0        0       
                                                                     
 COOLING                                                             
  YESTERDAY        6                         8     -2        9       
  MONTH TO DATE  148                       113     35      112       
  SINCE SEP 1    148                       113     35      112       
  SINCE JAN 1   1849                      1424    425     1814       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     S (200)      
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     S (190)      
  AVERAGE WIND SPEED     5.5                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.1                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    78           300 AM                                     
 LOWEST     35           100 PM                                     
 AVERAGE    57                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   81        94      1925                    
                                             1915                    
 MINIMUM TEMPERATURE (F)   64        44      1917                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 13 2012.....SUNRISE   648 AM EDT   SUNSET   719 PM EDT   
SEPTEMBER 14 2012.....SUNRISE   649 AM EDT   SUNSET   717 PM EDT   

                                                                    
-  INDICATES NEGATIVE NUMBERS.                                      
R  INDICATES RECORD WAS SET OR TIED.                                
MM INDICATES DATA IS MISSING.                                       
T  INDICATES TRACE AMOUNT.                                          




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