AFOS product CLISTL
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CDUS43 KLSX 210729
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO                                 
227 AM CDT SUN MAY 21 2017


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

...THE ST. LOUIS CLIMATE SUMMARY FOR MAY 20 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         82    419 PM  93    1902  77      5       73       
  MINIMUM         58    112 AM  41    1981  58      0       58       
                                      1894                          
  AVERAGE         70                        68      2       66      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        1.32          1.66 1947   0.15   1.17     0.01    
  MONTH TO DATE    5.02                      2.95   2.07     3.12    
  SINCE MAR 1     19.63                      9.96   9.67     9.90    
  SINCE JAN 1     21.92                     14.60   7.32    11.50    
                                                                     
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 MAR 1      1.8                       2.7   -0.9      0.3     
  SINCE JUL 1      3.2                      17.7  -14.5     10.9     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         2     -2        0       
  MONTH TO DATE   54                        62     -8       83       
  SINCE MAR 1    661                       920   -259      654       
  SINCE JUL 1   3394                      4518  -1124     3484       
                                                                     
 COOLING                                                             
  YESTERDAY        5                         5      0        1       
  MONTH TO DATE  117                        64     53       30       
  SINCE MAR 1    190                       110     80       90       
  SINCE JAN 1    192                       110     82       90       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    28   HIGHEST WIND DIRECTION     W (260)      
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION     W (260)      
  AVERAGE WIND SPEED     8.9                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.9                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    87           900 AM                                     
 LOWEST     54           300 PM                                     
 AVERAGE    71                                                       

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

                                                                     
THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   78        93      1941                    
 MINIMUM TEMPERATURE (F)   59        38      1883                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 21 2017...........SUNRISE   544 AM CDT   SUNSET   812 PM CDT   
MAY 22 2017...........SUNRISE   544 AM CDT   SUNSET   813 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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