McCartney Lake Weather Forecast

    • 53
    • 73

    Slight Chance Thunderstorms

    • 56
    • 76

    Chance Rain Showers

    • 56
    • 78

    Rain Showers Likely

    • 54
    • 71

    Rain Showers Likely

    • 54
    • 75

    Partly Sunny

    • 57
    • 76

    Chance Rain Showers

    • 55
    • 77

    Chance Thunderstorms

Today 18 Jun Grant

Mostly sunny. Highs in the lower 70s. Northwest Winds 5 to 10 Mph.

Tonight 18 Jun Grant

Partly cloudy with scattered Showers and isolated Thunderstorms this Evening, then mostly clear after midnight. Lows in the lower 50s. Light Winds. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McCartney Lake Temperature Statistics

June Temperature

Dubuque Regional Airport (21.1 miles)

  • Lowest 15 June, 2026

    48.9 °F

  • Average June

    70.1 °F

  • Highest 6 June, 2026

    87.1 °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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