I-55 weather conditions near Arnold, Missouri
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Light Rain 56°F 2025-11-17T22:53:00-06:00 
Tonight 2025-11-17, Chance T-storms. A 30 percent chance of rain and thunderstorms, mainly between midnight and 2am. Mostly cloudy, with a low around 52. South wind 6 to 9 mph.Tuesday 2025-11-18, Slight Chance T-storms then Partly Sunny. A 20 percent chance of rain and thunderstorms, mainly between 9am and noon. Partly sunny, with a high near 73. South wind 5 to 7 mph becoming northwest in the afternoon.
Tuesday Night 2025-11-18, Mostly Cloudy. Mostly cloudy, with a low around 47. North wind around 5 mph becoming calm in the evening.
Wednesday 2025-11-19, Mostly Cloudy. Mostly cloudy, with a high near 63. Calm wind.Wednesday Night 2025-11-19, Mostly Cloudy then Chance Rain. A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 48. Light and variable wind.
Thursday 2025-11-20, Rain. Rain, with thunderstorms also possible after 9am. High near 66. Chance of precipitation is 90%.
Thursday Night 2025-11-20, Rain. Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 80%.
Friday 2025-11-21, Rain Likely. Rain likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.Friday Night 2025-11-21, Chance Rain then Mostly Cloudy. A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 42.
Saturday 2025-11-22, Mostly Sunny. Mostly sunny, with a high near 57.
Saturday Night 2025-11-22, Partly Cloudy. Partly cloudy, with a low around 39.- Sunday 2025-11-23, Mostly Sunny. Mostly sunny, with a high near 61.
Sunday Night 2025-11-23, Partly Cloudy then Slight Chance Rain. A 20 percent chance of rain. Partly cloudy, with a low around 41.
Monday 2025-11-24, Chance Rain. A 30 percent chance of rain. Partly sunny, with a high near 60.