NWS Forecast for Florissant MO

National Weather Service Forecast for: Florissant MO
Issued by: National Weather Service Saint Louis, MO

Updated: 2:36 pm CDT May 31, 2025

Tonight Partly Cloudy	Sunday Mostly Sunny	Sunday Night Partly Cloudy	Monday Sunny	Monday Night Mostly Clear	Tuesday Mostly Sunny then Slight Chance T-storms	Tuesday Night Chance T-storms	Wednesday T-storms Likely	Wednesday Night T-storms Likely
Lo 61 °F	Hi 85 °F	Lo 63 °F	Hi 89 °F	Lo 69 °F	Hi 91 °F	Lo 73 °F	Hi 83 °F	Lo 67 °F

Hazardous Weather Outlook

Tonight	Partly cloudy, with a low around 61. Northwest wind 5 to 9 mph becoming light and variable in the evening.
Sunday	Mostly sunny, with a high near 85. East wind around 5 mph becoming light and variable in the afternoon.
Sunday Night	Partly cloudy, with a low around 63. Northeast wind around 6 mph becoming light and variable.
Monday	Sunny, with a high near 89. Light southeast wind becoming south 5 to 10 mph in the morning.
Monday Night	Mostly clear, with a low around 69. South wind 7 to 10 mph.
Tuesday	A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 91.
Tuesday Night	A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Wednesday	Showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Wednesday Night	Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Thursday	Showers and thunderstorms likely. Cloudy, with a high near 77. Chance of precipitation is 70%.
Thursday Night	A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Friday	A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
Friday Night	A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Saturday	A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.

Forecast from NOAA-NWS for Florissant MO.