Weather World
Village of Marissa, ILMarissa, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Marissa, IL Weather Forecast
Marissa, IL Weather Forecast Date: 758 AM CDT Sat Sep 19 2026
The area/counties/county of: Madison County Il, including the cities of: Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis.or toggle through each period.
Today... Mostly sunny. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph.
Tonight... Partly cloudy. Lows in the lower 70s. Southwest winds around 5 mph.
Sunday... Partly sunny with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the lower 90s. West winds around 5 mph. Chance of rain 50%.
Sunday Night... Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Lows in the upper 60s. Northeast winds 5 to 10 mph. Chance of rain 70%.
Monday... Showers likely with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Cooler with highs in the upper 70s. Northeast winds 10 to 15 mph. Chance of rain 70%.
Monday Night... A slight chance of thunderstorms in the evening. Mostly cloudy with a slight chance of showers. Lows in the upper 50s. Chance of rain 20%.
Tuesday... Mostly cloudy. Highs in the lower 70s. Lows in the mid 50s.
Tuesday Night... Mostly cloudy. Highs in the lower 70s. Lows in the mid 50s.
Wednesday... Partly cloudy. Highs in the mid 70s. Lows in the mid 50s.
Thursday... Partly cloudy. Highs in the mid 70s. Lows in the mid 50s.
Thursday Night... Mostly cloudy. Lows in the upper 50s. Highs in the upper 70s.
POP = Probability of Precipitation
Marissa Radar Loop
Use the map search tool if you want to place a location marker on the radar map...