Grant River Recreation Area Weather Forecast

    • 57
    • 79

    Mostly Sunny

    • 61
    • 83

    Slight Chance Rain Showers

    • 60
    • 86

    Mostly Sunny

    • 59
    • 87

    Slight Chance Thunderstorms

    • 58
    • 83

    Partly Sunny

    • 57
    • 81

    Partly Sunny

    • 56
    • 79

    Partly Sunny

Today 24 May Grant

Mostly sunny. Highs in the upper 70s. Light Winds.

Tonight 24 May Grant

Clear late this Evening, then becoming partly cloudy. Lows in the upper 50s. South Winds around 5 Mph.

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Grant River Recreation Area Temperature Statistics

May Temperature

Platteville Municipal Airport (13 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    57 °F

  • Highest 15 May, 2026

    81.5 °F

Climate (2021–Present)

Platteville Municipal Airport (13 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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