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City of La Salle, ILLa Salle, IL 7-Day Night Weather Forecast
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La Salle, IL Weather Forecast
La Salle, IL Weather Forecast Date: 121 AM CDT Fri Sep 11 2026
The area/counties/county of: La Salle, including the cities of: Ottawa, Streator, La Salle, Mendota, and Marseilles.or toggle through each period.
Rest of Tonight... Mostly clear. Patchy fog. Lows in the upper 50s. East winds around 5 mph.
Friday... Mostly sunny. Patchy fog early in the morning. Highs in the lower 80s. Southeast winds around 5 mph.
Friday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. South winds around 5 mph.
Saturday... Partly cloudy. Humid with highs in the mid 80s. Southwest winds 5 to 10 mph.
Saturday Night... Partly cloudy. Lows around 60. North winds around 5 mph.
Sunday... Partly cloudy in the morning, then mostly cloudy with a slight chance of showers in the afternoon. Highs around 80. Chance of precipitation 20%.
Sunday Night... Mostly cloudy with a slight chance of showers and thunderstorms. Lows around 60. Chance of precipitation 20%.
Monday... Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then partly cloudy in the afternoon. Highs in the lower 80s. Chance of precipitation 20%.
Monday Night... Partly cloudy. A chance of showers after midnight. Breezy with lows in the upper 60s. Chance of precipitation 50%.
Tuesday... Mostly cloudy with a chance of showers. Highs in the lower 80s. Chance of precipitation 50%.
Tuesday Night... Mostly cloudy. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 60s. Chance of precipitation 70%.
Wednesday... Mostly cloudy. Showers likely, mainly in the morning. Highs around 80. Chance of precipitation 70%.
Wednesday Night... Mostly cloudy. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 60s. Chance of precipitation 60%.
POP = Probability of Precipitation
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