McCartney Lake Weather Forecast

    • 63
    • 83

    Chance Thunderstorms

    • 65
    • 82

    Rain Showers Likely

    • 68
    • 84

    Rain Showers Likely

    • 67
    • 84

    Chance Rain Showers

    • 65
    • 81

    Chance Thunderstorms

    • 62
    • 80

    Slight Chance Thunderstorms

Today 7 Aug Grant

Mostly cloudy in the Morning, then becoming partly sunny. Areas of fog in the morning. Humid with Highs in the lower 80s. Southwest Winds 5 to 10 Mph.

Tonight 7 Aug Grant

Mostly cloudy in the Evening, then becoming partly cloudy. Humid with Lows in the lower 60s. West Winds 5 to 10 Mph.

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  • Temperature Real-Time

McCartney Lake Temperature Statistics

August Temperature

Dubuque Regional Airport (21.1 miles)

  • Lowest 3 August, 2026

    59 °F

  • Average August

    70.6 °F

  • Highest 2 August, 2026

    81 °F

Climate (2021–2026)

Dubuque Regional Airport (21.1 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.5 °F
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