McCartney Lake Weather Forecast

    • 63
    • 79

    Partly Sunny

    • 71
    • 87

    Partly Sunny

    • 74
    • 92

    Chance Rain Showers

    • 70
    • 93

    Mostly Sunny

    • 67
    • 89

    Partly Sunny

    • 66
    • 88

    Mostly Sunny

Today 24 Jul Grant

Mostly sunny. Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 24 Jul Grant

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 60s. South Winds 5 to 10 Mph.

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McCartney Lake Temperature Statistics

July Temperature

Dubuque Regional Airport (21.1 miles)

  • Lowest 12 July, 2026

    62.1 °F

  • Average July

    76.5 °F

  • Highest 14 July, 2026

    91 °F

Climate (2021–2026)

Dubuque Regional Airport (21.1 miles)

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  • Average Low 2021–2026

    40.6 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.5 °F
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