Weather World
Junction, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Junction, IL Weather Forecast
Junction, IL Weather Forecast Date: 127 AM CDT Sat Sep 05 2026
The area/counties/county of: Gallatin, including the city of Shawneetown.or toggle through each period.
Overnight... Clear. Lows in the lower 70s. Calm winds.
Saturday... Sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the upper 90s. West winds around 5 mph. Chance of rain 40%. Highest heat index readings heat index readings up to 105 in the afternoon.
Saturday Night... Partly cloudy with a chance of showers in the evening, then mostly clear after midnight. Lows in the lower 70s. North winds around 5 mph. Chance of rain 40%.
Sunday... Sunny. Highs around 90. Northeast winds 5 to 10 mph.
Sunday Night... Mostly clear. Lows in the mid 60s. Northeast winds 5 to 10 mph.
Labor Day... Sunny. Highs in the upper 80s.
Monday Night... Mostly clear. Lows in the mid 60s. Highs in the mid 90s.
Tuesday... Mostly clear. Lows in the mid 60s. Highs in the mid 90s.
Tuesday Night... Mostly clear. Hot. Lows in the lower 70s. Highs in the upper 90s.
Wednesday... Mostly clear. Hot. Lows in the lower 70s. Highs in the upper 90s.
Thursday... Mostly sunny with a chance of showers. Highs in the lower 90s. Chance of rain 40%.
Thursday Night... Partly cloudy. Lows in the mid 60s.
POP = Probability of Precipitation
Junction Radar Loop
Use the map search tool if you want to place a location marker on the radar map...