I-255 IL weather conditions near Collinsville, Illinois
Roadnow AI Agent Live Update
Seasoned Weather Conditions
Current Weather Conditions
click anywhere on map to change location
7 day weather forecast
Current condition: Mostly Cloudy 91°F 2025-06-20T14:53:00-05:00 
Tonight 2025-06-20, Clear. Clear, with a low around 76. South wind 8 to 14 mph, with gusts as high as 21 mph.
Saturday 2025-06-21, Sunny. Sunny, with a high near 96. Heat index values as high as 106. Southwest wind 9 to 16 mph, with gusts as high as 25 mph.
Saturday Night 2025-06-21, Mostly Clear. Mostly clear, with a low around 74. South wind 7 to 13 mph, with gusts as high as 22 mph.- Sunday 2025-06-22, Sunny. Sunny, with a high near 96. Heat index values as high as 103. Southwest wind 7 to 10 mph.
- Sunday Night 2025-06-22, Mostly Clear. Mostly clear, with a low around 77. South wind 6 to 10 mph.
Monday 2025-06-23, Hot. Sunny and hot, with a high near 97.
Monday Night 2025-06-23, Partly Cloudy. Partly cloudy, with a low around 77.
Tuesday 2025-06-24, Slight Chance Showers. A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 94.- Tuesday Night 2025-06-24, Partly Cloudy. Partly cloudy, with a low around 76.
Wednesday 2025-06-25, Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94.
- Wednesday Night 2025-06-25, Partly Cloudy. Partly cloudy, with a low around 76.
Thursday 2025-06-26, Mostly Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Thursday Night 2025-06-26, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75.Friday 2025-06-27, Slight Chance T-storms then Chance Showers. A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.