South Thomaston Weather Forecast

    • 51
    • 68

    Rain

    • 49
    • 63

    Rain

    • 51
    • 60

    Rain

    • 52
    • 61

    Chance Rain Showers

    • 51
    • 67

    Mostly Cloudy

    • 54
    • 68

    Partly Sunny

Today 26 Sep Knox

Mostly cloudy. A chance of rain in the afternoon. Highs in the upper 60s. Northeast Winds 10 to 15 Mph with Gusts up to 35 Mph. Chance of rain 50 percent.

Tonight 26 Sep Knox

Rain likely. Lows in the lower 50s. Northeast Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 70 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

South Thomaston Temperature Statistics

September Temperature

Rockland, Knox County Regional Airport (1.2 miles)

  • Lowest 20 September, 2026

    39 °F

  • Average September

    59.8 °F

  • Highest 10 September, 2026

    84 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (1.2 miles)

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

  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
Get WillyWeather+ to remove ads