McCartney Lake Weather Forecast

    • 65
    • 83

    Chance Thunderstorms

    • 64
    • 82

    Slight Chance Rain Showers

    • 64
    • 84

    Mostly Sunny

    • 66
    • 86

    Mostly Sunny

    • 67
    • 88

    Mostly Sunny

    • 69
    • 89

    Mostly Sunny

    • 69
    • 89

    Mostly Sunny

Today 9 Jul Grant

Partly sunny with scattered Showers and Thunderstorms. Highs in the lower 80s. Light Winds. Chance of rain 30 percent.

Tonight 9 Jul Grant

Partly cloudy. A slight chance of Showers and Thunderstorms this evening. Patchy fog after midnight. Lows in the mid 60s. Light Winds. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McCartney Lake Temperature Statistics

July Temperature

Dubuque Regional Airport (21.1 miles)

  • Lowest 7 July, 2026

    63 °F

  • Average July

    75.7 °F

  • Highest 1 July, 2026

    90 °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 °F

  • Average High 2021–2026

    59.4 °F
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