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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: 1217 PM CDT Sun Sep 13 2026
The area/counties/county of: La Salle, including the cities of: Ottawa, Streator, La Salle, Mendota, and Marseilles.or toggle through each period.
This Afternoon... Mostly cloudy. Scattered showers in the afternoon. Highs in the mid 70s. Temperature falling into the upper 60s in the afternoon. North winds 10 to 15 mph. Chance of precipitation 50%.
Tonight... Partly cloudy in the evening, then clearing. Isolated showers early in the evening. Patchy fog after midnight. Lows around 50. North winds around 5 mph. Chance of precipitation 20%.
Monday... Partly cloudy in the morning, then becoming mostly cloudy. Highs in the mid 70s. East winds 5 to 10 mph, increasing to southeast 10 to 15 mph in the afternoon.
Monday Night... Partly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Warmer with lows in the upper 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of precipitation 50%.
Tuesday... Showers likely with a slight chance of thunderstorms. More humid with highs in the mid 80s. Temperature falling into the upper 70s in the afternoon. Southwest winds 10 to 15 mph, becoming west 5 to 10 mph in the afternoon. Chance of precipitation 70%.
Tuesday Night... A chance of thunderstorms. Showers. Lows in the lower 60s. Chance of precipitation 90%.
Wednesday... Mostly cloudy. Showers with a slight chance of thunderstorms in the morning, then a chance of showers in the afternoon. Highs in the mid 70s. Chance of precipitation 80%.
Wednesday Night... Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Chance of precipitation 70%.
Thursday... Mostly cloudy. Showers likely, mainly in the morning. Highs in the lower 80s. Chance of precipitation 70%.
Thursday Night... Mostly cloudy. A chance of showers after midnight. Lows in the mid 60s. Chance of precipitation 40%.
Friday... Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers. Highs in the upper 70s. Chance of precipitation 50%.
Friday Night... Partly cloudy with a chance of showers in the evening, then mostly cloudy with showers likely after midnight. Lows in the lower 60s. Chance of precipitation 60%.
POP = Probability of Precipitation
La Salle Radar Loop
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