Winston Weather Forecast

    • 54
    • 82

    Mostly Cloudy

    • 58
    • 87

    Mostly Sunny

    • 58
    • 96

    Mostly Sunny

    • 58
    • 91

    Mostly Sunny

    • 53
    • 85

    Mostly Sunny

    • 52
    • 83

    Mostly Sunny

Today 17 Aug Canyon Ferry Area

Mostly cloudy. A 50 percent chance of Thunderstorms in the afternoon. Highs 80 to 85. North Winds up to 10 Mph.

Tonight 17 Aug Canyon Ferry Area

Cooler. Mostly cloudy with a 40 percent chance of Thunderstorms in the Evening, then partly cloudy after midnight. Haze after midnight. Lows 50 to 55. Southeast Winds up to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Winston Temperature Statistics

August Temperature

Helena Regional Airport (17.4 miles)

  • Lowest 7 August, 2025

    49.6 °F

  • Average August

    69.7 °F

  • Highest 12 August, 2025

    95.6 °F

Climate (2020–Present)

Helena Regional Airport (17.4 miles)

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

  • Average Low 2020–2025

    36 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
Get WillyWeather+ to remove ads