AFOS product CLISTL
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CDUS43 KLSX 210727
CLISTL

CLIMATE REPORT 
NATIONAL WEATHER SERVICE ST LOUIS MO
227 AM CDT TUE SEP 21 2021

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

...THE ST. LOUIS CLIMATE SUMMARY FOR SEPTEMBER 20 2021...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1874 TO 2021


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         88    329 PM  97    2017  80      8       76       
  MINIMUM         74    640 AM  40    1875  59     15       48       
  AVERAGE         81                        70     11       62     

PRECIPITATION (IN)                                                    
  YESTERDAY        T             1.40 1876   0.09  -0.09     0.00     
  MONTH TO DATE    1.28                      2.04  -0.76     0.50     
  SINCE SEP 1      1.28                      2.04  -0.76     0.50     
  SINCE JAN 1     35.00                     31.71   3.29    40.49     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           0.0  2015   0.0    0.0      0.0      
  MONTH TO DATE    0.0                       0.0    0.0      0.0      
  SINCE SEP 1      0.0                       0.0    0.0      0.0      
  SINCE JUL 1      0.0                       0.0    0.0      0.0      
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        0                         1     -1        3        
  MONTH TO DATE    0                         8     -8        9        
  SINCE SEP 1      0                         8     -8        9        
  SINCE JUL 1      0                         9     -9        9        

 COOLING                                                              
  YESTERDAY       16                         6     10        0        
  MONTH TO DATE  238                       167     71      176        
  SINCE SEP 1    238                       167     71      176        
  SINCE JAN 1   1799                      1617    182     1675        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION    SE (150)       
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     S (170)       
  AVERAGE WIND SPEED    11.1                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.7                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  LIGHT RAIN                                                          


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    85           300 AM                                      
 LOWEST     51           200 PM                                      
 AVERAGE    68                                                        

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


THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   79        97      1881                      
 MINIMUM TEMPERATURE (F)   59        40      1983                      


SUNRISE AND SUNSET                                                    
SEPTEMBER 21 2021.....SUNRISE   649 AM CDT   SUNSET   700 PM CDT     
SEPTEMBER 22 2021.....SUNRISE   649 AM CDT   SUNSET   658 PM CDT     


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




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