I-90 weather conditions near South Beloit, Illinois
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Partly Cloudy 48°F 2025-10-19T09:45:00-05:00 
Today 2025-10-19, Becoming Sunny and Breezy. Mostly cloudy early, then gradual clearing, with a high near 59. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight 2025-10-19, Clear. Clear, with a low around 37. West wind 5 to 10 mph becoming southwest after midnight.Monday 2025-10-20, Areas Frost then Sunny and Breezy. Areas of frost before 8am. Otherwise, sunny, with a high near 66. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night 2025-10-20, Showers Likely. Showers likely, mainly before 1am. Partly cloudy, with a low around 43. South wind 10 to 15 mph becoming west after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.Tuesday 2025-10-21, Breezy. Mostly Sunny then Chance Showers. A 30 percent chance of showers after 1pm. Increasing clouds, with a high near 53. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night 2025-10-21, Slight Chance Showers and Breezy. A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 39. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.- Wednesday 2025-10-22, Mostly Sunny. Mostly sunny, with a high near 53. Northwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday Night 2025-10-22, Partly Cloudy then Areas Frost. Areas of frost after 3am. Otherwise, mostly clear, with a low around 32. West wind 5 to 10 mph.
Thursday 2025-10-23, Frost then Sunny. Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 55.- Thursday Night 2025-10-23, Frost. Widespread frost, mainly after 2am. Otherwise, mostly clear, with a low around 30.
- Friday 2025-10-24, Frost then Mostly Sunny. Widespread frost. Otherwise, mostly sunny, with a high near 55.
Friday Night 2025-10-24, Partly Cloudy then Areas Frost. Areas of frost. Otherwise, partly cloudy, with a low around 34.- Saturday 2025-10-25, Areas Frost then Mostly Sunny. Areas of frost. Otherwise, mostly sunny, with a high near 56.