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Herculaneum, MO Weather Forecast
Herculaneum, MO Weather Forecast Date: 132 AM CDT Mon Oct 05 2026
The area/counties/county of: Monroe County Il, Jefferson County Mo.or toggle through each period.
Rest of Tonight... Clear. Near steady temperature in the mid 50s. Northeast winds around 5 mph.
Monday... Sunny. Highs in the upper 70s. Northeast winds around 5 mph.
Monday Night... Clear. Lows in the upper 40s. Northeast winds around 5 mph in the evening, becoming light and variable.
Tuesday... Sunny. Highs around 80. South winds around 5 mph.
Tuesday Night... Clear. Lows in the mid 50s. South winds around 5 mph.
Wednesday... Clear. Highs in the mid 80s. Lows in the upper 50s.
Wednesday Night... Clear. Highs in the mid 80s. Lows in the upper 50s.
Thursday... Mostly clear. Highs in the mid 80s. Lows in the upper 50s.
Friday... Mostly clear. Highs in the mid 80s. Lows in the upper 50s.
Saturday... Mostly clear. Highs in the mid 80s. Lows in the upper 50s.
POP = Probability of Precipitation
Herculaneum Radar Loop
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