Dewmaine Weather Forecast

    • 27
    • 57

    Decreasing Clouds

    • 33
    • 40

    Mostly Sunny

    • 30
    • 54

    Partly Sunny

    • 28
    • 43

    Partly Sunny

    • 42
    • 49

    Mostly Cloudy

    • 53
    • 60

    Mostly Cloudy

    • 57
    • 65

    Mostly Cloudy

Today 18 Dec Williamson

Showers. Highs in the upper 50s. Temperature falling into the upper 40s late. West Winds 10 to 15 Mph with Gusts up to 35 Mph. Chance of rain near 100 percent.

Tonight 18 Dec Williamson

Mostly cloudy this Evening, then becoming partly cloudy. Much cooler with Lows in the mid 20s. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Dewmaine Temperature Statistics

December Temperature

Marion - Williamson County Regional Airport (3.7 miles)

  • Lowest 14 December, 2025

    8.6 °F

  • Average December

    33 °F

  • Highest 6 December, 2025

    48.2 °F

Climate (2020–Present)

Marion - Williamson County Regional Airport (3.7 miles)

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

  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    55.7 °F

  • Average High 2020–2025

    67.5 °F
Get WillyWeather+ to remove ads