Jamestown Weather Forecast

    • 60
    • 86

    Increasing Clouds

    • 56
    • 85

    Slight Chance Thunderstorms

    • 52
    • 78

    Mostly Sunny

    • 55
    • 80

    Partly Sunny

    • 53
    • 78

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

Today 26 May Grant

Mostly sunny. Highs in the mid 80s. Southwest Winds 5 to 10 Mph.

Tonight 26 May Grant

Partly cloudy. Lows around 60. South Winds around 5 Mph in the Evening, becoming light and variable.

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Jamestown Temperature Statistics

May Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    57.3 °F

  • Highest 15 May, 2026

    81.5 °F

Climate (2021–Present)

Platteville Municipal Airport (8.7 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    58.8 °F
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