McCartney Lake Weather Forecast

    • 64
    • 86

    Rain Showers

    • 64
    • 84

    Rain Showers

    • 64
    • 87

    Slight Chance Thunderstorms

    • 65
    • 86

    Chance Thunderstorms

    • 67
    • 86

    Rain Showers Likely

    • 68
    • 90

    Chance Thunderstorms

    • 71
    • 94

    Partly Sunny

Today 4 Jun Grant

Mostly sunny. Highs in the mid 80s. South Winds 10 to 15 Mph.

Tonight 4 Jun Grant

A chance of Thunderstorms. A chance of Showers this Evening, then Showers after midnight. Lows in the lower 60s. South Winds 5 to 10 Mph. Chance of rain 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McCartney Lake Temperature Statistics

June Temperature

Dubuque Regional Airport (21.1 miles)

  • Lowest 2 June, 2026

    53.1 °F

  • Average June

    69.1 °F

  • Highest 2 June, 2026

    81 °F

Climate (2021–Present)

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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