AFOS product CLIDCA
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108 
CDUS41 KLWX 170520
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
120 AM EDT TUE JUL 17 2012


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR JULY 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         96    305 PM 104    1988  89      7       86       
  MINIMUM         76    507 AM  56    1930  71      5       67       
                                      1929                          
  AVERAGE         86                        80      6       77      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.02          0.81 1899   0.12  -0.10     0.00    
  MONTH TO DATE    1.69                      1.98  -0.29     2.59    
  SINCE JUN 1      4.07                      5.76  -1.69     4.27    
  SINCE JAN 1     14.81                     21.72  -6.91    17.94    
                                                                     
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       21                        15      6       12       
  MONTH TO DATE  332                       235     97      267       
  SINCE JUN 1    678                       549    129      688       
  SINCE JAN 1    937                       683    254      888       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION     N (340)      
  HIGHEST GUST SPEED    33   HIGHEST GUST DIRECTION    NW (330)      
  AVERAGE WIND SPEED     6.0                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.5                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    79           500 AM                                     
 LOWEST     41           300 PM                                     
 AVERAGE    60                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   89       102      1980                    
 MINIMUM TEMPERATURE (F)   71        56      1929                    
                                             1903                    

                                                                     
SUNRISE AND SUNSET                                                   
JULY 17 2012..........SUNRISE   557 AM EDT   SUNSET   831 PM EDT   
JULY 18 2012..........SUNRISE   558 AM EDT   SUNSET   831 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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