Weather forecast for: Florissant MO
Last Update: 4:21 am CDT Aug 3, 2026
Today: Sunny, with a high near 86. Light north wind.
Tonight: Mostly clear, with a low around 67. Light southeast wind.
Tuesday: Sunny, with a high near 89. Light southeast wind.
Tuesday Night: Mostly clear, with a low around 69. Southeast wind 3 to 5 mph.
Wednesday: Sunny, with a high near 91. South wind 3 to 5 mph.
Wednesday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72.
Thursday: Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Thursday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Friday: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.
Saturday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Saturday Night: Partly cloudy, with a low around 73.
Sunday: Mostly sunny, with a high near 92.