I-55 weather conditions near Herculaneum, Missouri
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fair 80°F 2025-10-12T16:53:00-05:00 Tonight 2025-10-12, Mostly Clear then Patchy Fog. Patchy fog after 2am. Otherwise, mostly clear, with a low around 55. Southeast wind 3 to 6 mph.
Columbus Day 2025-10-13, Areas Fog then Mostly Sunny. Areas of fog before 8am. Otherwise, mostly sunny, with a high near 81. Calm wind.
Monday Night 2025-10-13, Partly Cloudy. Partly cloudy, with a low around 58. Calm wind.- Tuesday 2025-10-14, Mostly Sunny. Mostly sunny, with a high near 82. Light and variable wind.
Tuesday Night 2025-10-14, Mostly Clear. Mostly clear, with a low around 56. Calm wind.
Wednesday 2025-10-15, Sunny. Sunny, with a high near 81.- Wednesday Night 2025-10-15, Mostly Clear. Mostly clear, with a low around 54.
- Thursday 2025-10-16, Sunny. Sunny, with a high near 80.
- Thursday Night 2025-10-16, Partly Cloudy. Partly cloudy, with a low around 54.
- Friday 2025-10-17, Mostly Sunny. Mostly sunny, with a high near 85.
Friday Night 2025-10-17, Partly Cloudy then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Saturday 2025-10-18, Chance Showers. A 50 percent chance of showers. Mostly sunny, with a high near 80.
Saturday Night 2025-10-18, Chance Showers. A 40 percent chance of showers. Partly cloudy, with a low around 51.
Sunday 2025-10-19, Chance Showers. A 30 percent chance of showers. Sunny, with a high near 73.