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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: 1136 PM CDT Wed Oct 14 2026
The area/counties/county of: Whiteside, including the city of Sterling.or toggle through each period.
Rest of Tonight... Mostly cloudy. A slight chance of showers. Lows in the mid 50s. East winds 5 to 10 mph. Chance of rain 20%.
Thursday... Showers likely in the morning, then showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 60s. East winds 5 to 10 mph. Chance of rain near 100%.
Thursday Night... Mostly cloudy. Showers likely in the evening. Cooler with lows in the mid 40s. Northwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 70%.
Friday... Partly sunny with a 40% chance of showers. Breezy with highs in the mid 50s. Northwest winds 20 to 25 mph.
Friday Night... Partly cloudy in the evening, then clearing. Areas of frost after midnight. Cooler with lows in the mid 30s. North winds 15 to 20 mph with gusts up to 30 mph, diminishing to around 5 mph after midnight.
Saturday... Widespread frost in the morning. Sunny. Highs in the upper 50s.
Saturday Night... Clear. Lows in the upper 30s. Highs in the mid 60s.
Sunday... Clear. Lows in the upper 30s. Highs in the mid 60s.
Sunday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s.
Monday... Partly cloudy. Highs in the upper 60s. Lows in the mid 40s.
Monday Night... Partly cloudy. Highs in the upper 60s. Lows in the mid 40s.
Tuesday... Mostly clear. Highs in the lower 70s. Lows in the upper 40s.
Tuesday Night... Mostly clear. Highs in the lower 70s. Lows in the upper 40s.
POP = Probability of Precipitation
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