63031 Weather (Florissant, MO)

Weather forecast for: Florissant MO

Last Update: 9:01 am CDT Aug 4, 2026

Today: Sunny, with a high near 89. Light and variable wind becoming southeast around 6 mph in the afternoon.

Tonight: Mostly clear, with a low around 71. Southeast wind 3 to 7 mph.

Wednesday: Sunny, with a high near 91. South wind 3 to 6 mph.

Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 73. Southeast wind 5 to 7 mph. Chance of precipitation is 70%.

Thursday: Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 87. South wind around 6 mph. Chance of precipitation is 70%.

Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 71.

Friday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87.

Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72.

Saturday: Mostly sunny, with a high near 90.

Saturday Night: Mostly clear, with a low around 74.

Sunday: Sunny, with a high near 93.

Sunday Night: Mostly clear, with a low around 76.

Monday: Mostly sunny, with a high near 94.