Charlestown Weather Forecast

    • 54
    • 81

    Sunny

    • 60
    • 84

    Partly Sunny

    • 62
    • 85

    Partly Sunny

    • 62
    • 84

    Partly Sunny

    • 63
    • 84

    Slight Chance Thunderstorms

    • 63
    • 86

    Partly Sunny

    • 66
    • 88

    Partly Sunny

Today 3 Aug Portage

Sunny. Highs in the lower 80s. East Winds around 5 Mph.

Tonight 3 Aug Portage

Clear. Lows in the mid 50s. Northeast Winds around 5 Mph.

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Charlestown Temperature Statistics

August Temperature

Portage County Airport (6.2 miles)

  • Lowest 1 August, 2025

    55.2 °F

  • Average August

    63.8 °F

  • Highest 1 August, 2025

    73.4 °F

Climate (2020–Present)

Portage County Airport (6.2 miles)

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  • Average Low 2020–2025

    40.8 °F

  • Average 2020–2025

    50.1 °F

  • Average High 2020–2025

    60 °F
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