Weather WorldRandolph County Lake, IL 7-Day Night Weather Forecast
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Randolph County Lake, IL Weather Forecast
Randolph County Lake, IL Weather Forecast Date: 1023 PM CDT Mon Aug 03 2026
The area/counties/county of: Randolph County Il, including the cities of: Chester and Sparta.or toggle through each period.
Overnight... Mostly clear. Lows in the mid 60s. East winds around 5 mph late this evening, becoming light and variable.
Tuesday... Patchy fog in the morning. Sunny. Highs in the upper 80s. Light and variable winds, becoming east around 5 mph in the afternoon.
Tuesday Night... Mostly clear. Lows in the mid 60s. Southeast winds around 5 mph.
Wednesday... Sunny. Highs around 90. South winds around 5 mph.
Wednesday Night... Mostly clear in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the upper 60s. South winds around 5 mph. Chance of rain 40%.
Thursday... Showers likely with a chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 70%.
Thursday Night... Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 60%.
Friday... Partly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50%.
Friday Night... Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers with a slight chance of thunderstorms. Lows in the upper 60s. Chance of rain 40%.
Saturday... Mostly sunny. A slight chance of showers and thunderstorms in the morning. Highs in the upper 80s. Chance of rain 20%.
Saturday Night... Mostly clear. Lows in the lower 70s. Highs in the lower 90s. Heat index values up to 105.
Sunday... Mostly clear. Lows in the lower 70s. Highs in the lower 90s. Heat index values up to 105.
POP = Probability of Precipitation
Randolph County Lake Radar Loop
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