Jamestown Weather Forecast

    • 55
    • 78

    Becoming Sunny

    • 55
    • 76

    Increasing Clouds

    • 60
    • 77

    Partly Sunny

    • 64
    • 79

    Chance Rain Showers

    • 62
    • 81

    Slight Chance Thunderstorms

    • 61
    • 79

    Mostly Sunny

    • 62
    • 79

    Partly Sunny

Today 22 Aug Grant

Mostly sunny. Near steady temperature in the upper 70s. Northwest Winds 10 to 15 Mph.

Tonight 22 Aug Grant

Mostly clear. Patchy fog after midnight. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Jamestown Temperature Statistics

August Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 20 August, 2026

    58.1 °F

  • Average August

    73.4 °F

  • Highest 10 August, 2026

    84.2 °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

    58.8 °F
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