Jamestown Weather Forecast

    • 70
    • 92

    Mostly Sunny

    • 72
    • 93

    Mostly Sunny

    • 71
    • 91

    Mostly Sunny

    • 72
    • 89

    Chance Thunderstorms

    • 69
    • 89

    Slight Chance Thunderstorms

    • 66
    • 86

    Mostly Sunny

Today 14 Jul Grant

Patchy fog this morning. Mostly sunny. Hot with Highs in the lower 90s. West Winds around 5 Mph. Heat index Values up to 100 this afternoon.

Tonight 14 Jul Grant

Mostly clear. Humid with Lows around 70. Light Winds. Heat index Values up to 100 early in the evening.

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Jamestown Temperature Statistics

July Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 7 July, 2026

    61.2 °F

  • Average July

    76.8 °F

  • Highest 1 July, 2026

    89.8 °F

Climate (2021–2026)

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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