AFOS product CLISTL
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CDUS43 KLSX 100728
CLISTL

CLIMATE REPORT 
NATIONAL WEATHER SERVICE ST LOUIS MO
228 AM CDT MON MAY 10 2021

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

...THE ST. LOUIS CLIMATE SUMMARY FOR MAY 9 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         59    359 AM  92    1895  75    -16       65       
                                      1934                           
  MINIMUM         42   1110 PM  35    1966  56    -14       39       
  AVERAGE         51                        65    -14       52     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.17          2.09 1949   0.16   0.01     0.00     
  MONTH TO DATE    0.39                      1.48  -1.09     1.25     
  SINCE MAR 1      9.66                      9.71  -0.05    10.12     
  SINCE JAN 1     15.12                     14.53   0.59    19.28     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           0.0  2015   0.0    0.0      0.0      
  MONTH TO DATE    0.0                       0.0    0.0       T       
  SINCE MAR 1      0.8                       2.5   -1.7       T       
  SINCE JUL 1     12.9                      16.6   -3.7     14.3      
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       14                         3     11       13        
  MONTH TO DATE   47                        33     14       56        
  SINCE MAR 1    704                       871   -167      823        
  SINCE JUL 1   4283                      4390   -107     4267        

 COOLING                                                              
  YESTERDAY        0                         4     -4        0        
  MONTH TO DATE   19                        25     -6       13        
  SINCE MAR 1     54                        69    -15       44        
  SINCE JAN 1     54                        70    -16       44        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NW (310)       
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION     N (340)       
  AVERAGE WIND SPEED     9.7                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.9                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  THUNDERSTORM                                                        
  RAIN                                                                
  LIGHT RAIN                                                          
  FOG                                                                 


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    89           600 AM                                      
 LOWEST     71           500 PM                                      
 AVERAGE    80                                                        

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


THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   75        91      1928                      
                                             1963                     
 MINIMUM TEMPERATURE (F)   56        31      1966                      


SUNRISE AND SUNSET                                                    
MAY 10 2021...........SUNRISE   554 AM CDT   SUNSET   803 PM CDT     
MAY 11 2021...........SUNRISE   553 AM CDT   SUNSET   804 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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