I-55 weather conditions near McLean, Illinois

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Fair 80°F 2025-08-16T21:35:00-05:00
• Tonight 2025-08-16, Chance T-storms. A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 74. South wind 3 to 5 mph.
• Sunday 2025-08-17, Mostly Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Heat index values as high as 103. Calm wind becoming southeast around 5 mph.
• Sunday Night 2025-08-17, Partly Cloudy. Partly cloudy, with a low around 73. Calm wind becoming east southeast around 5 mph after midnight.
• Monday 2025-08-18, Sunny. Sunny, with a high near 94. Heat index values as high as 105. Southeast wind 5 to 7 mph becoming southwest in the afternoon.
• Monday Night 2025-08-18, Mostly Clear. Mostly clear, with a low around 73. South southwest wind around 5 mph.
• Tuesday 2025-08-19, Mostly Sunny then Chance T-storms. A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. West northwest wind 5 to 8 mph.
• Tuesday Night 2025-08-19, Partly Cloudy. Partly cloudy, with a low around 68. West northwest wind around 6 mph becoming north northeast after midnight.
• Wednesday 2025-08-20, Partly Sunny. Partly sunny, with a high near 82.
• Wednesday Night 2025-08-20, Partly Cloudy. Partly cloudy, with a low around 62.
• Thursday 2025-08-21, Sunny. Sunny, with a high near 83.
• Thursday Night 2025-08-21, Mostly Clear. Mostly clear, with a low around 62.
• Friday 2025-08-22, Sunny. Sunny, with a high near 85.
• Friday Night 2025-08-22, Mostly Clear. Mostly clear, with a low around 63.
• Saturday 2025-08-23, Sunny. Sunny, with a high near 87.