I-70 weather conditions near Collinsville, Illinois
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Current Weather Conditions
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7 day weather forecast
Current condition: Partly Cloudy 75°F 2025-07-15T00:53:00-05:00 
Overnight 2025-07-15, Mostly Cloudy. Mostly cloudy, with a low around 71. Calm wind.
Tuesday 2025-07-15, Chance T-storms. A slight chance of showers, then a chance of showers and thunderstorms after 10am. Mostly cloudy, with a high near 86. South wind 3 to 6 mph. Chance of precipitation is 40%.Tuesday Night 2025-07-15, Slight Chance T-storms then Partly Cloudy. A 20 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 72. South wind 3 to 6 mph.
Wednesday 2025-07-16, Mostly Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 102. Calm wind becoming southwest 5 to 7 mph in the morning.
Wednesday Night 2025-07-16, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 75. South wind around 6 mph.Thursday 2025-07-17, Mostly Sunny then Chance T-storms. A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89.
Thursday Night 2025-07-17, Chance T-storms. A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 71.Friday 2025-07-18, Mostly Cloudy then Chance T-storms. A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 86.
Friday Night 2025-07-18, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73.
Saturday 2025-07-19, Chance T-storms. A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 92.- Saturday Night 2025-07-19, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Sunday 2025-07-20, Chance T-storms. A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Sunday Night 2025-07-20, Chance T-storms. A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Monday 2025-07-21, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.