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Tunnel Hill, IL Weather Forecast
Tunnel Hill, IL Weather Forecast Date: 127 AM CDT Tue Sep 29 2026
The area/counties/county of: Johnson, including the city of Vienna.or toggle through each period.
Overnight... Clear. Near steady temperature in the mid 50s. Calm winds.
Tuesday... Sunny. Highs in the lower 80s. South winds around 5 mph.
Tuesday Night... Mostly clear in the evening, then becoming partly cloudy. Lows around 60. Calm winds, becoming southeast around 5 mph after midnight.
Wednesday... Mostly sunny. Highs in the upper 80s. South winds 5 to 10 mph.
Wednesday Night... Partly cloudy. Lows in the mid 60s. South winds around 5 mph.
Thursday... Mostly sunny. Highs in the upper 80s.
Thursday Night... Mostly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of rain 30%.
Friday... Showers likely. Highs in the lower 80s. Chance of rain 70%.
Friday Night... Mostly cloudy with a 50% chance of showers. Lows in the lower 60s.
Saturday... Showers likely. Highs in the lower 70s. Chance of rain 60%.
Saturday Night... Mostly cloudy with a 40% chance of showers. Lows in the lower 60s.
Sunday... Mostly cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Highs in the lower 70s. Chance of rain 30%.
Sunday Night... Partly cloudy in the evening, then clearing. Lows in the lower 50s.
POP = Probability of Precipitation
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