McCartney Lake Weather Forecast

    • 4
    • 23

    Increasing Clouds

    • 22
    • 25

    Mostly Cloudy

    • 26
    • 41

    Rain Likely

    • 9
    • 31

    Mostly Cloudy

    • 3
    • 22

    Chance Snow

    • -5
    • 12

    Mostly Cloudy

    • -5
    • 6

    Cold

Today 7 Dec Grant

Mostly sunny. Highs around 20. Temperature falling to around 13 late. North Winds 5 to 10 Mph.

Tonight 7 Dec Grant

Partly cloudy this Evening, then becoming mostly cloudy. Colder with Lows around 2 below. Temperature rising to around 5 above after midnight. North Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McCartney Lake Temperature Statistics

December Temperature

Dubuque Regional Airport (21.1 miles)

  • Lowest 4 December, 2025

    -4 °F

  • Average December

    17.6 °F

  • Highest 3 December, 2025

    32 °F

Climate (2020–Present)

Dubuque Regional Airport (21.1 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    49.8 °F

  • Average High 2020–2025

    59.1 °F
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