Grant River Recreation Area Weather Forecast

    • 71
    • 87

    Rain Showers

    • 65
    • 83

    Partly Sunny

    • 65
    • 83

    Partly Sunny

    • 67
    • 87

    Chance Thunderstorms

    • 66
    • 85

    Chance Thunderstorms

    • 67
    • 85

    Chance Thunderstorms

Today 5 Jul Grant

Showers and numerous Thunderstorms. Highs in the upper 80s. Temperature falling into the lower 80s late. Southwest Winds 10 to 15 Mph. Chance of rain 100 percent. Heat index Values in the mid 90s.

Tonight 5 Jul Grant

Mostly cloudy. Numerous Showers and scattered Thunderstorms in the Evening, then scattered Showers and isolated Thunderstorms after midnight. Humid with Lows around 70. Southwest Winds 10 to 15 Mph. Chance of rain 70 percent.

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Grant River Recreation Area Temperature Statistics

July Temperature

Platteville Municipal Airport (13 miles)

  • Lowest 1 July, 2025

    60.8 °F

  • Average July

    75 °F

  • Highest 3 July, 2025

    87.8 °F

Climate (2020–Present)

Platteville Municipal Airport (13 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    49.7 °F

  • Average High 2020–2025

    58.5 °F
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