AFOS product CLIDCA
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CDUS41 KLWX 160533
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
133 AM EDT SUN SEP 16 2012


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 15 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         78    251 PM  97    1930  80     -2       78       
                                      1927                          
  MINIMUM         64   1142 PM  43    1902  63      1       54       
                                      1899                          
  AVERAGE         71                        71      0       66      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          2.52 1904   0.13  -0.13     0.03    
  MONTH TO DATE    2.44                      1.74   0.70     7.14    
  SINCE SEP 1      2.44                      1.74   0.70     7.14    
  SINCE JAN 1     21.15                     28.14  -6.99    34.44    
                                                                     
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                         7     -1        1       
  MONTH TO DATE  169                       134     35      135       
  SINCE SEP 1    169                       134     35      135       
  SINCE JAN 1   1870                      1445    425     1837       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION     N (360)      
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION     N (10)       
  AVERAGE WIND SPEED    10.1                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.7                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    84          1200 AM                                     
 LOWEST     33           200 PM                                     
 AVERAGE    59                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   80        96      1991                    
 MINIMUM TEMPERATURE (F)   63        44      1902                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 16 2012.....SUNRISE   651 AM EDT   SUNSET   714 PM EDT   
SEPTEMBER 17 2012.....SUNRISE   652 AM EDT   SUNSET   712 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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