AFOS product CLIDCA
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CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1225 AM EST MON DEC 12 2016


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 11 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         43   1159 PM  68    1979  48     -5       66       
                                      1971                          
                                      1897                          
  MINIMUM         29    234 AM  12    1917  34     -5       42       
                                      1904                          
                                      1880                          
  AVERAGE         36                        41     -5       54      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.66 2008   0.11  -0.11     0.00    
  MONTH TO DATE    1.40                      1.19   0.21     1.07    
  SINCE DEC 1      1.40                      1.19   0.21     1.07    
  SINCE JAN 1     30.49                     37.88  -7.39    41.25    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           6.8  1960   0.1   -0.1              
  MONTH TO DATE    0.0                       0.7   -0.7              
  SINCE JUL 1      0.0                       1.2   -1.2              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       29                        24      5       11       
  MONTH TO DATE  236                       249    -13      190       
  SINCE DEC 1    236                       249    -13      190       
  SINCE JUL 1    723                       944   -221      725       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1994                      1549    445     1998       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     S (170)      
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION     S (180)      
  AVERAGE WIND SPEED     7.1                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 1.0                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    70           900 PM                                     
 LOWEST     47          1000 AM                                     
 AVERAGE    59                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   48        71      1873                    
 MINIMUM TEMPERATURE (F)   33        13      1988                    
                                             1957                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 12 2016......SUNRISE   718 AM EST   SUNSET   447 PM EST   
DECEMBER 13 2016......SUNRISE   718 AM EST   SUNSET   447 PM EST   

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




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