AFOS product CLISTL
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CDUS43 KLSX 180737
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO                                 
132 AM CST SUN DEC 18 2016


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

...THE ST. LOUIS CLIMATE SUMMARY FOR DECEMBER 17 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         40    502 AM  72    1908  42     -2       38       
  MINIMUM         16   1159 PM  -3    1875  26    -10       32       
  AVERAGE         28                        34     -6       35      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.06          1.02 1959   0.09  -0.03     0.00    
                                      1897                          
  MONTH TO DATE    0.36                      1.62  -1.26     1.27    
  SINCE DEC 1      0.36                      1.62  -1.26     1.27    
  SINCE JAN 1     40.67                     39.74   0.93    50.77    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.2           2.0  1897   0.2    0.0      0.0     
  MONTH TO DATE    0.2                       2.0   -1.8       T      
  SINCE DEC 1      0.2                       2.0   -1.8       T      
  SINCE JUL 1      0.2                       2.7   -2.5       T      
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       37                        31      6       30       
  MONTH TO DATE  552                       486     66      292       
  SINCE DEC 1    552                       486     66      292       
  SINCE JUL 1   1043                      1312   -269      854       
                                                                     
 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    23   HIGHEST WIND DIRECTION    NW (320)      
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION    NW (310)      
  AVERAGE WIND SPEED    11.8                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 1.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         
  LT FREEZING RAIN                                                   
  LIGHT SNOW                                                         
  SLEET                                                              
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    92           200 AM                                     
 LOWEST     74          1100 PM                                     
 AVERAGE    83                                                       

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

                                                                     
THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   41        69      1939                    
 MINIMUM TEMPERATURE (F)   26        -4      1983                    
                                             1884                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 18 2016......SUNRISE   715 AM CST   SUNSET   442 PM CST   
DECEMBER 19 2016......SUNRISE   715 AM CST   SUNSET   443 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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