Jamestown Weather Forecast

    • 56
    • 75

    Rain Showers Likely

    • 41
    • 63

    Becoming Sunny

    • 48
    • 59

    Rain Showers Likely

    • 50
    • 63

    Rain Showers Likely

    • 52
    • 65

    Slight Chance Rain Showers

    • 55
    • 66

    Rain Showers Likely

    • 52
    • 67

    Rain Showers Likely

Today 28 Oct Grant

Mostly cloudy with a 50 percent chance of Showers. Lows in the lower 50s. Highs in the lower 60s.

Tonight 28 Oct Grant

Showers with a slight chance of Thunderstorms. Lows in the mid 50s. South Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming west after midnight. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

October Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 17 October, 2026

    32 °F

  • Average October

    58.3 °F

  • Highest 12 October, 2026

    85.1 °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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