AFOS product CLISTL
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CDUS43 KLSX 200737
CLISTL


CLIMATE REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO                                 
237 AM CDT SUN MAY 20 2018


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

...THE ST. LOUIS CLIMATE SUMMARY FOR MAY 19 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1874 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         80    203 PM  94    1996  77      3       85       
  MINIMUM         65    515 AM  40    1894  58      7       58       
  AVERAGE         73                        68      5       72      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.07          2.14 1915   0.15  -0.08     0.52    
  MONTH TO DATE    3.06                      2.80   0.26     3.70    
  SINCE MAR 1     12.46                      9.81   2.65    18.31    
  SINCE JAN 1     18.94                     14.45   4.49    20.60    
                                                                     
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      1.6                       2.7   -1.1      1.8     
  SINCE JUL 1      7.1                      17.7  -10.6      3.2     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        0                         2     -2        0       
  MONTH TO DATE    0                        60    -60       54       
  SINCE MAR 1   1134                       918    216      661       
  SINCE JUL 1   4605                      4516     89     3394       
                                                                     
 COOLING                                                             
  YESTERDAY        8                         5      3        7       
  MONTH TO DATE  168                        59    109      112       
  SINCE MAR 1    181                       105     76      185       
  SINCE JAN 1    181                       105     76      187       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    30   HIGHEST WIND DIRECTION     W (270)      
  HIGHEST GUST SPEED    37   HIGHEST GUST DIRECTION     W (270)      
  AVERAGE WIND SPEED     5.4                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 0.9                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST   100          1200 AM                                     
 LOWEST     58           100 PM                                     
 AVERAGE    79                                                       

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

                                                                     
THE ST. LOUIS CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   77        93      1902                    
 MINIMUM TEMPERATURE (F)   58        41      1981                    
                                             1894                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 20 2018...........SUNRISE   545 AM CDT   SUNSET   811 PM CDT   
MAY 21 2018...........SUNRISE   545 AM CDT   SUNSET   812 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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