AFOS product CLISTL
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CDUS43 KLSX 180730
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO                                 
230 AM CDT THU MAY 18 2017


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

...THE ST. LOUIS CLIMATE SUMMARY FOR MAY 17 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         84    450 PM  94    1996  77      7       54       
  MINIMUM         74    444 AM  40    1973  58     16       49       
  AVERAGE         79                        67     12       52      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             3.95 1995   0.15  -0.15     0.51    
  MONTH TO DATE    3.18                      2.50   0.68     3.11    
  SINCE MAR 1     17.79                      9.51   8.28     9.89    
  SINCE JAN 1     20.08                     14.15   5.93    11.49    
                                                                     
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 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       13       
  MONTH TO DATE   54                        56     -2       72       
  SINCE MAR 1    661                       914   -253      643       
  SINCE JUL 1   3394                      4512  -1118     3473       
                                                                     
 COOLING                                                             
  YESTERDAY       14                         4     10        0       
  MONTH TO DATE   88                        50     38       29       
  SINCE MAR 1    161                        96     65       89       
  SINCE JAN 1    163                        96     67       89       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    38   HIGHEST WIND DIRECTION     S (200)      
  HIGHEST GUST SPEED    47   HIGHEST GUST DIRECTION     S (200)      
  AVERAGE WIND SPEED    18.5                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.7                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    62          1000 PM                                     
 LOWEST     49           900 AM                                     
 AVERAGE    56                                                       

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

                                                                     
THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   77        94      1996                    
 MINIMUM TEMPERATURE (F)   58        39      2002                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 18 2017...........SUNRISE   547 AM CDT   SUNSET   810 PM CDT   
MAY 19 2017...........SUNRISE   546 AM CDT   SUNSET   811 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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