Weather WorldSplit Rock Lake, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Split Rock Lake, IL Weather Forecast
Split Rock Lake, IL Weather Forecast Date: 521 AM 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.
Today... Cloudy. Patchy very light drizzle. Highs in the mid 60s. Southeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.
Tonight... Cloudy, breezy. Nearly steady temperatures in the lower 60s. South winds 10 to 15 mph, increasing to 15 to 20 mph after midnight. Gusts up to 30 mph.
Tuesday... Mostly cloudy. A chance of showers late in the morning. Showers with a slight chance of thunderstorms in the afternoon. Breezy with highs in the lower 70s. South winds 15 to 20 mph with gusts up to 35 mph. Chance of precipitation 90%.
Tuesday Night... A slight chance of thunderstorms in the evening. Showers, breezy with lows in the mid 50s. South winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of precipitation near 100%.
Wednesday... Mostly cloudy. A chance of showers, mainly in the morning. Highs in the mid 60s. Southwest winds 10 to 15 mph. Chance of precipitation 50%.
Wednesday Night... Mostly cloudy. Lows in the upper 40s.
Thursday... Mostly cloudy. A slight chance of showers in the afternoon. Highs in the upper 50s. Chance of precipitation 20%.
Thursday Night... Mostly cloudy. A slight chance of showers in the evening. Lows in the mid 40s. Chance of precipitation 20%.
Friday... Mostly cloudy. Highs in the upper 50s.
Friday Night... Mostly cloudy. Lows around 40.
Saturday... Mostly cloudy. Highs in the upper 50s.
Saturday Night... Mostly cloudy. Lows around 40.
POP = Probability of Precipitation
Split Rock Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...