Weather forecast for: Herculaneum MO
Last Update: 5:46 am CDT Sep 29, 2026
Today: Sunny, with a high near 84. South wind around 6 mph.
Tonight: Mostly cloudy, with a low around 61. Southeast wind around 5 mph becoming calm in the evening.
Wednesday: Sunny, then becoming cloudy during the afternoon, with a high near 89. South wind 5 to 8 mph.
Wednesday Night: Mostly cloudy, with a low around 68. South wind 5 to 7 mph.
Thursday: A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 89. South wind 6 to 9 mph.
Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Friday: Showers. High near 75. Chance of precipitation is 80%.
Friday Night: A 40 percent chance of showers. Cloudy, with a low around 57.
Saturday: A 40 percent chance of showers. Mostly cloudy, with a high near 69.
Saturday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 56.
Sunday: Partly sunny, with a high near 70.
Sunday Night: Mostly clear, with a low around 51.
Monday: Sunny, with a high near 69.
WeatherWorld.com
