I-55 weather conditions near Collinsville, Illinois
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Light Rain 66°F 2025-09-22T03:53:00-05:00 
Overnight 2025-09-22, Showers. Showers. Low around 65. Southeast wind around 5 mph. Chance of precipitation is 80%.Monday 2025-09-22, Showers Likely then Chance T-storms. Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 78. Southeast wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 60%.
Monday Night 2025-09-22, Partly Cloudy. Partly cloudy, with a low around 66. Light southeast wind.Tuesday 2025-09-23, Slight Chance Showers then Chance Showers. A slight chance of showers between 11am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 50%.
- Tuesday Night 2025-09-23, Showers. Showers and possibly a thunderstorm. Low around 67. South wind around 5 mph becoming light and variable. Chance of precipitation is 80%.
Wednesday 2025-09-24, Showers. Showers, with thunderstorms also possible after 1pm. High near 77. Chance of precipitation is 80%.
Wednesday Night 2025-09-24, Chance Showers. A 50 percent chance of showers. Mostly cloudy, with a low around 62.
Thursday 2025-09-25, Chance Showers. A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 75. Chance of precipitation is 40%.
Thursday Night 2025-09-25, Slight Chance Showers. A 20 percent chance of showers. Partly cloudy, with a low around 59.Friday 2025-09-26, Mostly Sunny then Slight Chance Showers. A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 78.
Friday Night 2025-09-26, Mostly Clear. Mostly clear, with a low around 58.
Saturday 2025-09-27, Sunny. Sunny, with a high near 82.- Saturday Night 2025-09-27, Mostly Clear. Mostly clear, with a low around 59.
- Sunday 2025-09-28, Sunny. Sunny, with a high near 83.