Castleton Weather Forecast

    • 57
    • 81

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

    • 59
    • 79

    Partly Sunny

    • 63
    • 79

    Partly Sunny

    • 63
    • 82

    Slight Chance Thunderstorms

    • 62
    • 81

    Mostly Sunny

Today 22 Aug Stark

Sunny with scattered Sprinkles. Near steady temperature around 80. Northwest Winds 10 to 15 Mph.

Tonight 22 Aug Stark

Clear. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.

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Castleton Temperature Statistics

August Temperature

Marshall County Airport (17.4 miles)

  • Lowest 20 August, 2026

    59.2 °F

  • Average August

    73.8 °F

  • Highest 10 August, 2026

    90.1 °F

Climate (2021–2026)

Marshall County Airport (17.4 miles)

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  • Average Low 2021–2026

    42.4 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    62.3 °F
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