Jamestown Weather Forecast

    • 54
    • 75

    Chance Rain Showers

    • 55
    • 79

    Mostly Sunny

    • 60
    • 85

    Mostly Sunny

    • 62
    • 87

    Partly Sunny

    • 60
    • 85

    Slight Chance Thunderstorms

    • 59
    • 82

    Partly Sunny

Today 23 May Grant

Partly sunny. A chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the mid 70s. Light Winds, becoming southwest in the afternoon. Chance of rain 50 percent.

Tonight 23 May Grant

Mostly cloudy. A chance of Showers in the evening. Lows in the lower 50s. South Winds around 5 Mph, becoming west after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jamestown Temperature Statistics

May Temperature

Platteville Municipal Airport (8.7 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    57.3 °F

  • Highest 15 May, 2026

    81.5 °F

Climate (2021–Present)

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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