Jamestown Weather Forecast

    • 74
    • 91

    Slight Chance Thunderstorms

    • 69
    • 92

    Slight Chance Thunderstorms

    • 65
    • 85

    Mostly Sunny

    • 64
    • 86

    Mostly Sunny

    • 66
    • 85

    Chance Rain Showers

    • 66
    • 83

    Chance Rain Showers

Today 26 Jul Grant

Partly sunny. Hot with Highs in the lower 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 105.

Tonight 26 Jul Grant

Mostly cloudy in the Evening, then partly cloudy with a slight chance of Showers and Thunderstorms after midnight. Humid with Lows in the mid 70s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 110 early in the evening.

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Jamestown Temperature Statistics

July Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 23 July, 2026

    51.4 °F

  • Average July

    75.9 °F

  • Highest 15 July, 2026

    90.9 °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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