AFOS product CLISTL
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CDUS43 KLSX 010731
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO                                 
130 AM CST MON JAN 1 2018


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

...THE ST. LOUIS CLIMATE SUMMARY FOR DECEMBER 31 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         12    300 PM  74    1951  40    -28       55       
                                      1875                          
  MINIMUM          2   1159 PM -10    1976  24    -22       30       
  AVERAGE          7                        32    -25       43      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             1.69 1984   0.09  -0.09     0.00    
  MONTH TO DATE    0.84                      2.84  -2.00     1.13    
  SINCE DEC 1      0.84                      2.84  -2.00     1.13    
  SINCE JAN 1     36.65                     40.96  -4.31    41.44    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        T             2.5  1927   0.2   -0.2      0.0     
  MONTH TO DATE    3.5                       4.4   -0.9      0.2     
  SINCE DEC 1      3.5                       4.4   -0.9      0.2     
  SINCE JUL 1      3.5                       5.1   -1.6      0.2     
  SNOW DEPTH       T                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       58                        33     25       22       
  MONTH TO DATE  928                       939    -11      931       
  SINCE DEC 1    928                       939    -11      931       
  SINCE JUL 1   1630                      1765   -135     1422       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1959                      1646    313     2162       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    NW (310)      
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    NW (320)      
  AVERAGE WIND SPEED    10.7                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.5                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT SNOW                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    79          1000 PM                                     
 LOWEST     63           100 PM                                     
 AVERAGE    71                                                       

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

                                                                     
THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   40        70      1965                    
 MINIMUM TEMPERATURE (F)   24       -10      1974                    
                                             1887                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY  1 2018.......SUNRISE   720 AM CST   SUNSET   451 PM CST   
JANUARY  2 2018.......SUNRISE   720 AM CST   SUNSET   452 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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