McCartney Lake Weather Forecast

    • 69
    • 87

    Rain Showers

    • 61
    • 82

    Chance Thunderstorms

    • 64
    • 83

    Mostly Sunny

    • 69
    • 88

    Partly Sunny

    • 69
    • 89

    Chance Thunderstorms

    • 60
    • 81

    Chance Rain Showers

Today 11 Jul Grant

Mostly cloudy with scattered Showers in the Morning, then partly sunny with a chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the upper 80s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 11 Jul Grant

A chance of Thunderstorms. Showers likely in the Evening, then a chance of Showers after midnight. Humid with Lows in the upper 60s. Southwest Winds 5 to 10 Mph. Chance of rain 70 percent.

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McCartney Lake Temperature Statistics

July Temperature

Dubuque Regional Airport (21.1 miles)

  • Lowest 2 July, 2025

    62.1 °F

  • Average July

    75.8 °F

  • Highest 4 July, 2025

    90 °F

Climate (2020–Present)

Dubuque Regional Airport (21.1 miles)

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  • Average Low 2020–2025

    40.2 °F

  • Average 2020–2025

    49.6 °F

  • Average High 2020–2025

    58.9 °F
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