AFOS product CLIDCA
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CDUS41 KLWX 300530
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
130 AM EDT SUN SEP 30 2012


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR SEPTEMBER 29 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         73    217 PM  93    1954  74     -1       78       
  MINIMUM         58   1148 PM  40    1942  57      1       62       
  AVERAGE         66                        66      0       70      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          2.68 1924   0.13  -0.13     0.00    
  MONTH TO DATE    4.29                      3.59   0.70     8.84    
  SINCE SEP 1      4.29                      3.59   0.70     8.84    
  SINCE JAN 1     23.00                     29.99  -6.99    36.14    
                                                                     
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                         2     -2        0       
  MONTH TO DATE    4                        19    -15       14       
  SINCE SEP 1      4                        19    -15       14       
  SINCE JUL 1      4                        19    -15       14       
                                                                     
 COOLING                                                             
  YESTERDAY        1                         3     -2        5       
  MONTH TO DATE  229                       200     29      204       
  SINCE SEP 1    229                       200     29      204       
  SINCE JAN 1   1930                      1511    419     1906       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     N (340)      
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     N (340)      
  AVERAGE WIND SPEED     8.8                                         

                                                                     
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    69           800 AM                                     
 LOWEST     37           500 PM                                     
 AVERAGE    53                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   74        91      1986                    
                                             1954                    
 MINIMUM TEMPERATURE (F)   57        38      1942                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 30 2012.....SUNRISE   704 AM EDT   SUNSET   652 PM EDT   
OCTOBER  1 2012.......SUNRISE   704 AM EDT   SUNSET   650 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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