Weather forecast for: South Beloit IL
Last Update: 3:25 am CDT Sep 13, 2026
Overnight: Mostly clear, with a low around 54. North northwest wind around 5 mph.
Sunday: Scattered showers between noon and 4pm. Mostly sunny, with a high near 68. Light north wind becoming north northwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 40%.
Sunday Night: Mostly clear, with a low around 45. Northwest wind around 5 mph becoming calm in the evening.
Monday: Increasing clouds, with a high near 73. Light and variable wind becoming south southeast 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Monday Night: Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Breezy, with a south southeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Tuesday: Showers and possibly a thunderstorm. High near 77. Chance of precipitation is 80%.
Tuesday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 55.
Wednesday: A chance of showers. Cloudy, with a high near 70.
Wednesday Night: A chance of showers, then showers and possibly a thunderstorm after 1am. Cloudy, with a low around 59.
Thursday: Showers likely, mainly before 1pm. Mostly cloudy, with a high near 76.
Thursday Night: A chance of showers. Mostly cloudy, with a low around 58.
Friday: A chance of showers. Partly sunny, with a high near 74.
Friday Night: A chance of showers. Mostly cloudy, with a low around 55.
Saturday: A chance of showers. Partly sunny, with a high near 73.
WeatherWorld.com
