Weather World
Matthiessen Dells Nature Preserve, IL 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Matthiessen Dells Nature Preserve, IL Weather Forecast
Matthiessen Dells Nature Preserve, IL Weather Forecast Date: 516 AM CDT Sat Aug 15 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... Showers and a chance of thunderstorms early in the morning, then a chance of showers late in the morning. A slight chance of showers in the afternoon. Some thunderstorms May produce heavy rainfall early in the morning. Highs in the lower 80s. South winds 5 to 10 mph, becoming southwest in the afternoon. Chance of precipitation near 100%.
Tonight... Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Humid with lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of precipitation 60%.
Sunday... Mostly cloudy. A chance of showers and thunderstorms early in the morning. Humid with highs in the mid 80s. Northwest winds 5 to 10 mph. Chance of precipitation 40%.
Sunday Night... Partly cloudy in the evening, then clearing. Humid with lows in the mid 60s. Northwest winds 5 to 10 mph.
Monday... Mostly sunny in the morning, then becoming partly cloudy. Highs in the lower 80s. North winds around 5 mph.
Monday Night... Mostly clear. Lows in the lower 60s.
Tuesday... Partly cloudy in the morning, then becoming mostly cloudy. Highs in the lower 80s.
Tuesday Night... Mostly cloudy with a slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of precipitation 70%.
Wednesday... Mostly cloudy. A chance of showers and thunderstorms in the morning. Highs around 80. Chance of precipitation 40%.
Wednesday Night... Partly cloudy. Lows in the lower 60s.
Thursday... Partly cloudy in the morning, then becoming mostly cloudy. Highs in the mid 70s.
Thursday Night... Partly cloudy. Lows in the upper 50s.
POP = Probability of Precipitation
Matthiessen Dells Nature Preserve Radar Loop
Use the map search tool if you want to place a location marker on the radar map...