Jamestown Weather Forecast

    • 60
    • 83

    Increasing Clouds

    • 57
    • 79

    Mostly Cloudy

    • 58
    • 78

    Slight Chance Thunderstorms

    • 56
    • 84

    Mostly Sunny

    • 56
    • 82

    Mostly Sunny

    • 60
    • 84

    Partly Sunny

Today 29 May Grant

Mostly sunny. Highs in the lower 80s. Light Winds.

Tonight 29 May Grant

Mostly cloudy. Lows in the upper 50s. East Winds 5 to 10 Mph.

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Jamestown Temperature Statistics

May Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    59.5 °F

  • Highest 27 May, 2026

    88.3 °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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