196  
CDUS43 KLSX 200729  
CLISTL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ST LOUIS MO  
229 AM CDT WED AUG 20 2025  
   
...............................
 
 
   
..THE ST. LOUIS CLIMATE SUMMARY FOR AUGUST 19 2025
 
 
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)  
YESTERDAY  
MAXIMUM 93 150 PM 105 1936 88 5 86  
1962  
MINIMUM 77 1159 PM 55 1953 69 8 67  
AVERAGE 85 79 6 77  
 
PRECIPITATION (IN)  
YESTERDAY 0.04 2.03 1914 0.11 -0.07 0.00  
MONTH TO DATE 1.48 2.17 -0.69 1.06  
SINCE JUN 1 10.44 10.59 -0.15 10.57  
SINCE JAN 1 32.09 28.46 3.63 31.36  
 
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 JUN 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  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 0 4 -4 0  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 20 14 6 12  
MONTH TO DATE 308 278 30 268  
SINCE JUN 1 1261 1105 156 1199  
SINCE JAN 1 1432 1300 132 1512    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 7.5  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 400 AM  
LOWEST 58 400 PM  
AVERAGE 70  
   
......................................................
 
 
THE ST. LOUIS CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 104 1962  
MINIMUM TEMPERATURE (F) 69 52 1950  
 
SUNRISE AND SUNSET  
AUGUST 20 2025........SUNRISE 620 AM CDT SUNSET 749 PM CDT  
AUGUST 21 2025........SUNRISE 621 AM CDT SUNSET 747 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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