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St. John, MO 7-Day Weather Forecast
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St. John Weather Forecast
St. John, MO Weather Forecast Date: 127 PM CDT Sat Sep 19 2026
Weather forecast for St. John, MO
Today Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
This Afternoon... Partly sunny. Hot. Near steady temperature in the mid 90s. West winds 5 to 10 mph. |
Sun Hi: 91°FHi: 33°C Lo: 69°F Lo: 21°C |
Sunday... Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. West winds around 5 mph. Chance of rain 20%. |
| Mon Hi: 80°FHi: 27°C Lo: 55°F Lo: 13°C |
Monday... A slight chance of thunderstorms. Showers likely, mainly in the morning. Cooler with highs around 80. Northeast winds 5 to 10 mph. Chance of rain 70%. |
| Tue Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Tuesday... Mostly cloudy. Highs in the lower 70s. Lows in the mid 50s. |
Wed Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Wednesday... Partly cloudy. Highs in the lower 70s. Lows in the mid 50s. |
| Thu Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Thursday... Partly sunny. Highs in the mid 70s. |
Fri Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Friday... Mostly cloudy. A 20% chance of showers. Lows in the upper 50s. Highs in the upper 70s. |
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