I-55 weather conditions near Arnold, Missouri

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: A Few Clouds 56°F 2025-11-18T04:53:00-06:00
• Today 2025-11-18, Chance T-storms then Partly Sunny. A 40 percent chance of rain and thunderstorms, mainly before 7am. Mostly cloudy, with a high near 72. Southeast wind around 7 mph becoming northwest in the afternoon.
• Tonight 2025-11-18, Mostly Cloudy. Mostly cloudy, with a low around 43. North wind 3 to 5 mph.
• Wednesday 2025-11-19, Mostly Cloudy. Mostly cloudy, with a high near 62. Calm wind.
• Wednesday Night 2025-11-19, Mostly Cloudy then Chance Rain. A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 49. Calm wind.
• Thursday 2025-11-20, Rain. Rain likely before 9am, then rain likely and possibly a thunderstorm between 9am and noon, then rain after noon. High near 63. Calm wind becoming south around 6 mph. Chance of precipitation is 80%.
• Thursday Night 2025-11-20, Rain. Rain likely and possibly a thunderstorm, then rain after midnight. Low around 51. Chance of precipitation is 80%.
• Friday 2025-11-21, Rain. Rain. High near 58. Chance of precipitation is 80%.
• Friday Night 2025-11-21, Chance Rain then Slight Chance Rain. A 50 percent chance of rain, mainly before midnight. Mostly cloudy, with a low around 43.
• Saturday 2025-11-22, Mostly Sunny. Mostly sunny, with a high near 57.
• Saturday Night 2025-11-22, Mostly Clear. Mostly clear, with a low around 40.
• Sunday 2025-11-23, Sunny. Sunny, with a high near 60.
• Sunday Night 2025-11-23, Partly Cloudy. Partly cloudy, with a low around 43.
• Monday 2025-11-24, Slight Chance Rain. A 20 percent chance of rain. Partly sunny, with a high near 61.