McCartney Lake Weather Forecast

    • 67
    • 77

    Rain Showers

    • 69
    • 84

    Rain Showers Likely

    • 63
    • 81

    Chance Thunderstorms

    • 61
    • 79

    Partly Sunny

    • 65
    • 79

    Chance Rain Showers

    • 61
    • 79

    Chance Rain Showers

Today 14 Aug Grant

Areas of fog in the morning. A slight chance of Thunderstorms. Showers likely in the Morning, then a chance of Showers in the afternoon. Humid with Highs in the upper 70s. East Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 14 Aug Grant

A chance of Thunderstorms. Showers with Lows in the mid 60s. East Winds 10 to 15 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McCartney Lake Temperature Statistics

August Temperature

Dubuque Regional Airport (21.1 miles)

  • Lowest 8 August, 2026

    57.9 °F

  • Average August

    71.2 °F

  • Highest 10 August, 2026

    84 °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

    59.4 °F
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