| NWS Forecast for: Saint Peters MO Issued by: National Weather Service Saint Louis, MO Last Update: 1:25 pm CDT May 10, 2026 |  |
This Afternoon: Mostly sunny, with a high near 21. North wind around 11 km/h. Tonight: Mostly clear, with a low around 8. Calm wind. Monday: Sunny, with a high near 25. Calm wind becoming northwest 5 to 10 km/h in the afternoon. Monday Night: Mostly clear, with a low around 12. Calm wind. Tuesday: Sunny, with a high near 29. Southwest wind 10 to 15 km/h increasing to 16 to 21 km/h in the afternoon. Winds could gust as high as 37 km/h. Tuesday Night: Showers likely and possibly a thunderstorm before 1am. Partly cloudy, with a low around 14. Chance of precipitation is 70%. Wednesday: Sunny, with a high near 26. Wednesday Night: Clear, with a low around 11. Thursday: Sunny, with a high near 24. Thursday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 15. Friday: A 20 percent chance of showers. Mostly sunny, with a high near 29. Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 18. Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 31. | |
| Saint Peters MO 38.78°N 90.59°W (Elev. 492 m) | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |
