| NWS Forecast for: Saint Louis MO Issued by: National Weather Service Saint Louis, MO Last Update: 10:21 pm CDT Oct 12, 2026 | |
| Overnight: Clear, with a low around 70. Southwest wind 6 to 8 mph. Tuesday: Sunny and hot, with a high near 97. Heat index values as high as 102. Southwest wind 6 to 8 mph. Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 73. South wind 5 to 8 mph. Wednesday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 82. West wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 100%. Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 68. Light and variable wind. Chance of precipitation is 60%. Thursday: Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 90%. Thursday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 30%. Friday: Partly sunny, with a high near 64. Friday Night: Mostly clear, with a low around 43. Saturday: Sunny, with a high near 63. Saturday Night: Mostly clear, with a low around 43. Sunday: Sunny, with a high near 71. Sunday Night: Partly cloudy, with a low around 50. Monday: Mostly sunny, with a high near 76. | |
| Saint Louis MO 38.64°N 90.23°W (Elev. 538 ft) | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |