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 66°F 2025-05-12T11:53:00-05:00 
This Afternoon 2025-05-12, Showers Likely. Scattered showers before 1pm, then scattered showers and thunderstorms between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 73. Calm wind becoming east 5 to 7 mph. Chance of precipitation is 70%.Tonight 2025-05-12, Scattered T-storms then Isolated Showers and Patchy Fog. Scattered showers and thunderstorms before midnight, then isolated showers. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 61. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Tuesday 2025-05-13, Cloudy then Isolated T-storms. Isolated showers and thunderstorms after noon. Cloudy, then gradually becoming mostly sunny, with a high near 79. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night 2025-05-13, Mostly Clear. Mostly clear, with a low around 60. Light south wind.
Wednesday 2025-05-14, Sunny. Sunny, with a high near 85. Calm wind becoming southeast 5 to 8 mph in the morning.
Wednesday Night 2025-05-14, Partly Cloudy. Partly cloudy, with a low around 68.- Thursday 2025-05-15, Sunny. Sunny, with a high near 91.
- Thursday Night 2025-05-15, Partly Cloudy. Partly cloudy, with a low around 64.
Friday 2025-05-16, Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87.
Friday Night 2025-05-16, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 60.- Saturday 2025-05-17, Sunny. Sunny, with a high near 84.
Saturday Night 2025-05-17, Partly Cloudy then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 59.
Sunday 2025-05-18, Chance T-storms. A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.