I-255 IL weather conditions near Saint Louis, Missouri

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Fair 71°F 2025-07-11T04:53:00-05:00
• Today 2025-07-11, Sunny. Sunny, with a high near 96. Heat index values as high as 103. Calm wind becoming south 5 to 8 mph in the morning.
• Tonight 2025-07-11, Partly Cloudy then Chance T-storms. A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. South wind 5 to 7 mph.
• Saturday 2025-07-12, Mostly Sunny then Chance T-storms. A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. West wind 6 to 9 mph.
• Saturday Night 2025-07-12, Chance T-storms then Chance Showers. A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 72. West wind around 6 mph becoming calm in the evening.
• Sunday 2025-07-13, Chance T-storms. A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon.
• Sunday Night 2025-07-13, Partly Cloudy. Partly cloudy, with a low around 70.
• Monday 2025-07-14, Mostly Sunny. Mostly sunny, with a high near 92.
• Monday Night 2025-07-14, Mostly Cloudy. Mostly cloudy, with a low around 73.
• Tuesday 2025-07-15, Partly Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94.
• Tuesday Night 2025-07-15, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
• Wednesday 2025-07-16, Slight Chance Showers then Chance T-storms. A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95.
• Wednesday Night 2025-07-16, Chance T-storms. A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
• Thursday 2025-07-17, Slight Chance Showers then Chance T-storms. A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.