AFOS product CLIDCA
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CDUS41 KLWX 310520
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
120 AM EDT TUE JUL 31 2012


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR JULY 30 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         89    215 PM  99    1953  88      1       97       
  MINIMUM         75    602 AM  56    1914  71      4       81       
  AVERAGE         82                        80      2       89      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          4.25 1878   0.12  -0.12     0.00    
  MONTH TO DATE    2.78                      3.61  -0.83     3.03    
  SINCE JUN 1      5.16                      7.39  -2.23     4.71    
  SINCE JAN 1     15.90                     23.35  -7.45    18.38    
                                                                     
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 JUN 1      0                         6     -6        0       
  SINCE JUL 1      0                         0      0        0       
                                                                     
 COOLING                                                             
  YESTERDAY       17                        15      2       24       
  MONTH TO DATE  578                       445    133      588       
  SINCE JUN 1    924                       759    165     1009       
  SINCE JAN 1   1183                       893    290     1209       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION    SE (140)      
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     E (100)      
  AVERAGE WIND SPEED     6.5                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.7                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  HAZE                                                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    82           300 AM                                     
 LOWEST     50           100 PM                                     
 AVERAGE    66                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   88       103      1954                    
 MINIMUM TEMPERATURE (F)   71        52      1895                    

                                                                     
SUNRISE AND SUNSET                                                   
JULY 31 2012..........SUNRISE   609 AM EDT   SUNSET   820 PM EDT   
AUGUST  1 2012........SUNRISE   610 AM EDT   SUNSET   819 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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