Jamestown Weather Forecast

    • 64
    • 83

    Rain Showers Likely

    • 63
    • 81

    Rain Showers Likely

    • 68
    • 83

    Rain Showers Likely

    • 67
    • 83

    Rain Showers Likely

    • 64
    • 80

    Chance Thunderstorms

    • 61
    • 79

    Slight Chance Thunderstorms

    • 59
    • 76

    Partly Sunny

Today 7 Aug Grant

Mostly cloudy. Near steady temperature in the lower 80s. Southwest Winds 5 to 10 Mph.

Tonight 7 Aug Grant

Mostly cloudy with Showers likely with a chance of Thunderstorms this Evening, then partly cloudy after midnight. Lows in the lower 60s. West Winds 5 to 10 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

August Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 3 August, 2026

    59.9 °F

  • Average August

    71.7 °F

  • Highest 4 August, 2026

    82.8 °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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