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Prophetstown State Park, IL 7-Day Night Weather Forecast
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Prophetstown State Park, IL Weather Forecast
Prophetstown State Park, IL Weather Forecast Date: 126 PM CDT Sat Aug 08 2026
The area/counties/county of: Whiteside, including the city of Sterling.or toggle through each period.
This Afternoon... Sunny. Highs in the lower 80s. Northwest winds around 5 mph.
Tonight... Mostly clear. Humid with lows in the lower 60s. Southwest winds around 5 mph, becoming southeast after midnight.
Sunday... Partly sunny with a chance of showers and thunderstorms. Humid with highs in the upper 80s. South winds 5 to 10 mph. Chance of rain 50%.
Sunday Night... Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. Showers likely, mainly in the evening. Humid with lows around 70. South winds 5 to 10 mph. Chance of rain 70%.
Monday... A chance of thunderstorms in the morning. Partly sunny with a chance of showers. Humid with highs in the mid 80s. South winds 5 to 10 mph. Chance of rain 50%.
Monday Night... Partly cloudy with a chance of showers. A chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 50%.
Tuesday... Mostly cloudy in the morning, then becoming partly sunny. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50%.
Tuesday Night... Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 50%.
Wednesday... Mostly cloudy with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50%.
Wednesday Night... Partly cloudy with a chance of showers. Lows in the mid 60s. Chance of rain 40%.
Thursday... Partly sunny in the morning, then becoming mostly cloudy. Highs in the upper 70s.
Thursday Night... Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers. Lows around 60. Chance of rain 40%.
POP = Probability of Precipitation
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