Mark Twain Lake Weather Forecast

    • 67
    • 90

    Thunderstorms

    • 69
    • 88

    Isolated Thunderstorms

    • 69
    • 88

    Mostly Sunny

    • 69
    • 88

    Chance Thunderstorms

    • 66
    • 78

    Chance Thunderstorms

    • 66
    • 79

    Chance Rain Showers

    • 67
    • 77

    Slight Chance Rain Showers

Today 15 Sep Monroe

Mostly sunny with scattered Thunderstorms with isolated Showers. Near steady temperature around 90. East Winds around 5 Mph. Chance of rain 30 percent.

Tonight 15 Sep Monroe

Mostly cloudy with isolated Showers and Thunderstorms this Evening, then partly cloudy after midnight. Lows in the mid 60s. East Winds around 5 Mph. Chance of rain 20 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mark Twain Lake Temperature Statistics

September Temperature

Quincy Regional Airport-Baldwin Field (42.9 miles)

  • Lowest 7 September, 2025

    45 °F

  • Average September

    66.5 °F

  • Highest 13 September, 2025

    95 °F

Climate (2020–Present)

Quincy Regional Airport-Baldwin Field (42.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    55 °F

  • Average High 2020–2025

    64.8 °F
Get WillyWeather+ to remove ads