| NWS Forecast for: Saint Peters MO Issued by: National Weather Service Saint Louis, MO Last Update: 12:06 pm CDT Apr 16, 2026 |  |
This Afternoon: Sunny, with a high near 83. West wind 5 to 7 mph. Tonight: Mostly clear, with a low around 61. Calm wind becoming south around 5 mph after midnight. Friday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 85. South wind 6 to 14 mph, with gusts as high as 24 mph. Friday Night: Showers and thunderstorms, mainly before 4am, then showers and possibly a thunderstorm after 4am. Low around 48. South wind 11 to 13 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%. Saturday: A chance of showers and thunderstorms. Mostly sunny, with a high near 61. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. Saturday Night: Mostly clear, with a low around 40. Sunday: Sunny, with a high near 66. Sunday Night: Mostly clear, with a low around 44. Monday: Sunny, with a high near 73. Monday Night: Mostly clear, with a low around 53. Tuesday: Mostly sunny, with a high near 76. Tuesday Night: A 20 percent chance of showers. Partly cloudy, with a low around 56. Wednesday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 80. | |
| Saint Peters MO 38.78°N 90.59°W (Elev. 492 ft) | |
Visit your local NWS office at: https://www.weather.gov/lsx/ |
