AFOS product CLISTL
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CDUS43 KLSX 220731
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO                                 
230 AM CDT MON MAY 22 2017


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

...THE ST. LOUIS CLIMATE SUMMARY FOR MAY 21 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         73    247 PM  93    1941  78     -5       78       
  MINIMUM         59   1159 PM  38    1883  59      0       52       
  AVERAGE         66                        68     -2       65      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          2.00 1957   0.16  -0.16     0.00    
  MONTH TO DATE    5.02                      3.11   1.91     3.12    
  SINCE MAR 1     19.63                     10.12   9.51     9.90    
  SINCE JAN 1     21.92                     14.76   7.16    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                        64    -10       83       
  SINCE MAR 1    661                       922   -261      654       
  SINCE JUL 1   3394                      4520  -1126     3484       
                                                                     
 COOLING                                                             
  YESTERDAY        1                         5     -4        0       
  MONTH TO DATE  118                        69     49       30       
  SINCE MAR 1    191                       115     76       90       
  SINCE JAN 1    193                       115     78       90       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     W (270)      
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION     W (280)      
  AVERAGE WIND SPEED    10.8                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.3                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  NO SIGNIFICANT WEATHER WAS OBSERVED.                               

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    70          1200 AM                                     
 LOWEST     41           100 PM                                     
 AVERAGE    56                                                       

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

                                                                     
THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   78        94      1925                    
 MINIMUM TEMPERATURE (F)   59        37      1883                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 22 2017...........SUNRISE   544 AM CDT   SUNSET   813 PM CDT   
MAY 23 2017...........SUNRISE   543 AM CDT   SUNSET   814 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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