AFOS product CLISTL
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CDUS43 KLSX 200727
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO                                 
126 AM CST TUE DEC 20 2016


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

...THE ST. LOUIS CLIMATE SUMMARY FOR DECEMBER 19 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         25    342 PM  68    1976  41    -16       47       
  MINIMUM          3    538 AM  -7    1983  26    -23       26       
                                      1884                          
  AVERAGE         14                        34    -20       37      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.49 1895   0.08  -0.08     0.00    
  MONTH TO DATE    0.36                      1.78  -1.42     1.27    
  SINCE DEC 1      0.36                      1.78  -1.42     1.27    
  SINCE JAN 1     40.67                     39.90   0.77    50.77    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0          12.0  1973   0.2   -0.2      0.0     
  MONTH TO DATE    0.2                       2.3   -2.1       T      
  SINCE DEC 1      0.2                       2.3   -2.1       T      
  SINCE JUL 1      0.2                       3.0   -2.8       T      
  SNOW DEPTH       T                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       51                        31     20       28       
  MONTH TO DATE  658                       548    110      349       
  SINCE DEC 1    658                       548    110      349       
  SINCE JUL 1   1149                      1374   -225      911       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   2162                      1646    516     1873       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION    SE (150)      
  HIGHEST GUST SPEED    14   HIGHEST GUST DIRECTION     S (160)      
  AVERAGE WIND SPEED     4.6                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.1                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    79           600 AM                                     
 LOWEST     36           300 PM                                     
 AVERAGE    58                                                       

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

                                                                     
THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   41        71      2013                    
 MINIMUM TEMPERATURE (F)   26       -10      1901                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 20 2016......SUNRISE   716 AM CST   SUNSET   443 PM CST   
DECEMBER 21 2016......SUNRISE   716 AM CST   SUNSET   444 PM CST   

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




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