Weather WorldRoachtown Lake, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Roachtown Lake, IL Weather Forecast
Roachtown Lake, IL Weather Forecast Date: 129 PM CDT Thu Oct 22 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.
This Afternoon... Sunny. Near steady temperature in the mid 70s. Northeast winds around 5 mph.
Tonight... Clear. Lows in the upper 40s. East winds around 5 mph in the evening, becoming light and variable.
Friday... Sunny. Highs in the mid 70s. Southeast winds around 5 mph.
Friday Night... Mostly clear. Lows in the upper 40s. Southeast winds around 5 mph.
Saturday... Mostly sunny. Highs in the mid 70s. Southeast winds around 5 mph.
Saturday Night... Partly cloudy. Lows in the upper 40s. Highs in the upper 70s.
Sunday... Partly cloudy. Lows in the upper 40s. Highs in the upper 70s.
Sunday Night... Mostly cloudy. Lows in the lower 50s. Highs in the upper 70s.
Monday... Mostly cloudy. Lows in the lower 50s. Highs in the upper 70s.
Tuesday... Mostly cloudy. Highs in the lower 70s. Lows around 50.
Tuesday Night... Mostly cloudy. Highs in the lower 70s. Lows around 50.
POP = Probability of Precipitation
Roachtown Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...