Seneca, IL 7-Day Night Weather Forecast
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Seneca, IL Weather Forecast


Seneca, IL Weather Forecast Date: 331 PM CST Mon Nov 02 2026
The area/counties/county of: La Salle, including the cities of: Ottawa, Streator, La Salle, Mendota, and Marseilles.or toggle through each period.
Late This Afternoon... Cloudy. A slight chance of showers. Temperatures around 60. South winds 10 to 15 mph. Chance of precipitation 20%.
Tonight... Cloudy. A slight chance of showers until early morning. Lows in the lower 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 20%.
Tuesday... Cloudy. A chance of showers in the late morning and early afternoon. Showers with a slight chance of thunderstorms late. Breezy with highs around 70. South winds 15 to 20 mph with gusts up to 30 mph. Chance of precipitation 90%.
Tuesday Night... Showers with a slight chance of thunderstorms until early morning, then a chance of showers late. Lows in the upper 50s. South winds 10 to 15 mph. Gusts up to 25 mph in the evening. Chance of precipitation near 100%.
Wednesday... Mostly cloudy. Showers likely, mainly in the morning. Nearly steady temperatures in the upper 50s. Southwest winds 10 to 15 mph. Chance of precipitation 60%.
Wednesday Night... Mostly cloudy. Lows in the upper 40s. Southwest winds around 10 mph.
Thursday... Mostly cloudy. A slight chance of showers in the afternoon. Highs in the mid 50s. Chance of precipitation 20%.
Thursday Night... Mostly cloudy with a 20% chance of rain. Lows in the mid 40s.
Friday... Mostly cloudy. Highs in the mid 50s.
Friday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 30s.
Saturday... Partly cloudy. Highs in the mid 50s.
Saturday Night... Mostly cloudy. Lows in the mid 30s.
Sunday... Partly cloudy. Highs in the upper 50s.
Sunday Night... Partly cloudy. Lows in the upper 30s.
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