| National Weather Service Forecast for:
St. Louis, MO Issued by: National Weather Service St. Louis/St. Charles, MO |
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| Updated: Sun, 26-Jul-2026 11:21am CDT | ||||||||||||||||||||||||||||||||||||||||
| Saint Louis | ||||||||||||||||||||||||||||||||||||||||
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Extreme Heat Warning issued July 26 at 12:40AM CDT until July 27 at 9:00PM CDT
| This Afternoon |
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 97. Heat index values as high as 115. West wind around 5 mph. Chance of precipitation is 20%. |
| Tonight |
A chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 79. Heat index values as high as 113. South wind 1 to 5 mph. Chance of precipitation is 20%. |
| Monday |
Sunny, with a high near 98. Heat index values as high as 111. Southwest wind 2 to 8 mph. |
| Monday Night |
Mostly clear, with a low around 80. Heat index values as high as 110. West wind 5 to 8 mph. |
| Tuesday |
Mostly sunny, with a high near 94. Northwest wind 5 to 8 mph. |
| Tuesday Night |
Partly cloudy, with a low around 73. |
| Wednesday |
Sunny, with a high near 90. |
| Wednesday Night |
Mostly clear, with a low around 69. |
| Thursday |
Sunny, with a high near 90. |
| Thursday Night |
A slight chance of rain showers after 1am. Partly cloudy, with a low around 71. Chance of precipitation is 20%. |
| Friday |
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 20%. |
| Friday Night |
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 30%. |
| Saturday |
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%. |
| Saturday Night |
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 69. Chance of precipitation is 20%. |
Forecast from NOAA-NWS for St. Louis, MO.