Jamestown Weather Forecast

    • 50
    • 74

    Mostly Sunny

    • 54
    • 73

    Increasing Clouds

    • 53
    • 71

    Partly Sunny

    • 51
    • 70

    Mostly Cloudy

    • 46
    • 63

    Mostly Cloudy

    • 47
    • 60

    Mostly Cloudy

    • 46
    • 62

    Mostly Cloudy

Today 22 Oct Grant

Mostly sunny. Highs in the mid 70s. Light Winds.

Tonight 22 Oct Grant

Mostly clear this Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the lower 50s. Southeast Winds around 5 Mph.

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Jamestown Temperature Statistics

October Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 17 October, 2026

    32 °F

  • Average October

    57.9 °F

  • Highest 12 October, 2026

    85.1 °F

Climate (2021–2026)

Platteville Municipal Airport (8.7 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    58.7 °F
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