| NWS Forecast for: Saint Peters MO Issued by: National Weather Service Saint Louis, MO Last Update: 5:56 pm CDT May 9, 2026 | |
Tonight: Showers and thunderstorms likely before 2am, then a slight chance of showers between 2am and 4am. Increasing clouds, with a low around 13. Southwest wind 5 to 11 km/h becoming north after midnight. Chance of precipitation is 70%. Sunday: Partly sunny, with a high near 21. North wind 10 to 13 km/h. Sunday Night: Mostly clear, with a low around 8. North wind 5 to 8 km/h becoming calm in the evening. Monday: Sunny, with a high near 24. Calm wind becoming west 5 to 10 km/h in the afternoon. Monday Night: Mostly clear, with a low around 11. Calm wind becoming south 5 to 8 km/h after midnight. Tuesday: Sunny, with a high near 28. Tuesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 14. Chance of precipitation is 40%. Wednesday: Sunny, with a high near 25. Wednesday Night: Clear, with a low around 11. Thursday: Sunny, with a high near 25. Thursday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 14. Friday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 31. Friday Night: A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 18. Saturday: Mostly sunny, with a high near 34. | |
| Saint Peters MO 38.78°N 90.59°W (Elev. 492 m) | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |