I-55 weather conditions near Herculaneum, Missouri

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Fair 38°F 2025-11-26T21:53:00-06:00
• Tonight 2025-11-26, Mostly Cloudy. Mostly cloudy, with a low around 30. Northwest wind 3 to 6 mph.
• Thanksgiving Day 2025-11-27, Sunny. Sunny, with a high near 42. Northwest wind 3 to 7 mph.
• Thursday Night 2025-11-27, Clear. Clear, with a low around 22. Northwest wind around 5 mph becoming calm in the evening.
• Friday 2025-11-28, Increasing Clouds. Increasing clouds, with a high near 41. Light and variable wind.
• Friday Night 2025-11-28, Cloudy then Chance Snow. A 50 percent chance of snow after midnight. Cloudy, with a low around 29. Southeast wind 3 to 6 mph.
• Saturday 2025-11-29, Rain/Snow. Rain, possibly mixed with snow. High near 41. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
• Saturday Night 2025-11-29, Rain Likely then Chance Rain. Rain likely, mainly before midnight. Cloudy, with a low around 25. Chance of precipitation is 60%.
• Sunday 2025-11-30, Mostly Cloudy. Mostly cloudy, with a high near 33.
• Sunday Night 2025-11-30, Mostly Cloudy. Mostly cloudy, with a low around 18.
• Monday 2025-12-01, Slight Chance Snow/Sleet then Chance Snow. A slight chance of snow and sleet before noon, then a chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.
• Monday Night 2025-12-01, Chance Snow. A 30 percent chance of snow. Mostly cloudy, with a low around 18.
• Tuesday 2025-12-02, Mostly Sunny. Mostly sunny, with a high near 35.
• Tuesday Night 2025-12-02, Partly Cloudy. Partly cloudy, with a low around 19.
• Wednesday 2025-12-03, Mostly Sunny. Mostly sunny, with a high near 43.