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St Clair County, MO 7-Day Night Weather Forecast
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St Clair County, MO Weather Forecast
St Clair County, MO Weather Forecast Date: 128 PM CDT Mon Sep 07 2026
The area/counties/county of: St. Clair, including the cities of: Tiffin, Appleton City, and Johnson City.or toggle through each period.
This Afternoon... Sunny with a 20% chance of showers. Hot with highs in the upper 90s. Southeast winds around 5 mph.
Tonight... Mostly clear. Humid with lows in the mid 70s. Southeast winds around 5 mph.
Tuesday... Sunny, hot with highs around 100. South winds 5 to 10 mph.
Tuesday Night... Clear with lows in the upper 70s. South winds around 5 mph.
Wednesday... Sunny. Showers likely with a chance of thunderstorms in the afternoon. Hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west in the afternoon. Chance of rain 70%. Heat index values up to 108.
Wednesday Night... Showers with a chance of thunderstorms. Lows in the upper 60s. Chance of rain near 100%.
Thursday... Showers likely with a chance of thunderstorms in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Not as warm with highs in the mid 80s. Chance of rain 70%.
Thursday Night... Partly cloudy. A chance of showers after midnight. Lows in the mid 60s. Chance of rain 30%.
Friday... Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Hot with highs in the upper 80s. Chance of rain 40%.
Friday Night... Mostly clear in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 50%.
Saturday... A slight chance of thunderstorms in the morning. Mostly sunny with a slight chance of showers. Hot with highs around 90. Chance of rain 20%.
Saturday Night... Mostly clear with a 20% chance of showers. Lows in the upper 60s.
POP = Probability of Precipitation
St Clair County Radar Loop
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