Grant River Recreation Area Weather Forecast

    • 70
    • 86

    Rain Showers Likely

    • 58
    • 82

    Mostly Sunny

    • 57
    • 77

    Mostly Sunny

    • 61
    • 81

    Partly Sunny

    • 63
    • 82

    Partly Sunny

    • 66
    • 85

    Mostly Sunny

Today 20 Jul Grant

Areas of smoke this morning. Partly sunny with a chance of Thunderstorms. Showers likely this Morning, then a chance of Showers this afternoon. Highs in the upper 80s. South Winds 10 to 15 Mph. Chance of rain 70 percent. Heat index Values in the mid 90s this afternoon.

Tonight 20 Jul Grant

Partly cloudy. Showers likely with a chance of Thunderstorms in the evening. Humid with Lows in the upper 60s. West Winds 10 to 15 Mph. Chance of rain 70 percent. Heat index Values in the mid 90s early in the evening.

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Grant River Recreation Area Temperature Statistics

July Temperature

Platteville Municipal Airport (13 miles)

  • Lowest 7 July, 2026

    61.2 °F

  • Average July

    78.3 °F

  • Highest 15 July, 2026

    90.9 °F

Climate (2021–2026)

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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