230  
CDUS43 KLSX 152227  
CLISTL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ST LOUIS MO  
527 PM CDT MON SEP 15 2025  
   
...............................
 
 
   
..THE ST. LOUIS CLIMATE SUMMARY FOR SEPTEMBER 15 2025
 
 
VALID AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1874 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 92 351 PM 101 1939 81 11 88  
MINIMUM 72 532 AM 45 1961 61 11 71  
2007  
AVERAGE 82 71 11 80  
 
PRECIPITATION (IN)  
TODAY 0.00 2.05 1914 0.10 -0.10 0.00  
MONTH TO DATE 0.17 1.58 -1.41 0.08  
SINCE SEP 1 0.17 1.58 -1.41 0.08  
SINCE JAN 1 32.26 31.25 1.01 31.76  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 2015 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 1 -1 0  
MONTH TO DATE 4 3 1 3  
SINCE SEP 1 4 3 1 3  
SINCE JUL 1 4 4 0 3  
 
COOLING  
TODAY 17 7 10 15  
MONTH TO DATE 126 135 -9 121  
SINCE SEP 1 126 135 -9 121  
SINCE JAN 1 1647 1585 62 1829    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION E (110)  
AVERAGE WIND SPEED 5.9  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 500 AM  
LOWEST 37 400 PM  
AVERAGE 61  
   
......................................................
 
 
THE ST. LOUIS CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 98 1927  
1954  
MINIMUM TEMPERATURE (F) 61 44 1966  
 
SUNRISE AND SUNSET  
SEPTEMBER 15 2025.....SUNRISE 643 AM CDT SUNSET 709 PM CDT  
SEPTEMBER 16 2025.....SUNRISE 644 AM CDT SUNSET 708 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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