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City of Florissant, MOFlorissant, MO 7-Day Weather Forecast
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Florissant Weather Forecast
Florissant, MO Weather Forecast Date: 152 AM CDT Mon Aug 10 2026
Weather forecast for Florissant, MO
Tonight Lo: 79°F Lo: 26°C |
Tonight... Mostly clear. Near steady temperature in the upper 70s. South winds 5 to 10 mph. |
Mon Hi: 95°FHi: 35°C Lo: 79°F Lo: 26°C |
Monday... Mostly sunny. A slight chance of showers and thunderstorms in the morning. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 20%. Heat index values up to 109. |
Tue Hi: 99°FHi: 37°C Lo: 79°F Lo: 26°C |
Tuesday... Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 112. |
| Wed Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Wednesday... Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20%. Heat index values up to 110. |
| Thu Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Thursday... Mostly cloudy. A chance of showers and thunderstorms. Highs in the lower 90s. Lows in the lower 70s. Chance of rain 50%. Heat index values up to 105. |
| Fri Hi: 89°FHi: 32°C Lo: 71°F Lo: 22°C |
Friday... Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the upper 80s. Chance of rain 50%. Heat index values up to 100. |
| Sat Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Saturday... Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the lower 90s. Chance of rain 20%. Heat index values up to 105. |
| Sat Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Saturday... Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Highs in the lower 90s. Chance of rain 20%. Heat index values up to 105. |
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