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Johannisburg Grade School, IL Weather Forecast
Johannisburg Grade School, IL Weather Forecast Date: 938 PM CDT Wed Aug 05 2026
The area/counties/county of: Clinton County Il, including the cities of: Centralia and Salem.or toggle through each period.
Tonight... Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. South winds around 5 mph. Chance of rain 50%.
Thursday... Mostly cloudy. Showers and thunderstorms likely, mainly in the morning. Highs in the lower 80s. Southwest winds around 5 mph. Chance of rain 70%.
Thursday Night... Mostly cloudy with a chance of showers and thunderstorms. Humid with lows around 70. South winds around 5 mph. Chance of rain 50%.
Friday... Partly sunny with a chance of showers and thunderstorms. Humid with highs in the mid 80s. Southwest winds around 5 mph. Chance of rain 50%.
Friday Night... Mostly cloudy with a chance of showers and thunderstorms. Humid with lows in the lower 70s. Southwest winds around 5 mph. Chance of rain 50%.
Saturday... Mostly sunny. Highs in the upper 80s. Heat index values up to 100.
Saturday Night... Mostly clear. Lows in the lower 70s. Heat index values up to 100 early in the evening.
Sunday... Mostly sunny. Highs around 90. Heat index values up to 105 in the afternoon.
Sunday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening.
Monday... Mostly sunny. Highs in the lower 90s. Heat index values up to 105.
Monday Night... Mostly clear. Lows in the mid 70s. Heat index values up to 100 early in the evening.
Tuesday... Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20%. Heat index values up to 105.
Tuesday Night... Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 70s. Chance of rain 40%. Heat index values up to 100 early in the evening.
POP = Probability of Precipitation
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