McCartney Lake Weather Forecast

    • 49
    • 57

    Rain Showers

    • 50
    • 63

    Rain Showers

    • 53
    • 65

    Mostly Cloudy

    • 57
    • 67

    Rain Showers

    • 52
    • 68

    Rain Showers

    • 47
    • 64

    Chance Rain Showers

Today 30 Oct Grant

Partly sunny this Morning, then cloudy with a slight chance of rain Showers this afternoon. Highs in the mid 50s. East Winds around 5 Mph. Chance of rain 20 percent.

Tonight 30 Oct Grant

Cloudy. A slight chance of Showers in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Warmer with Lows in the upper 40s. East Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McCartney Lake Temperature Statistics

October Temperature

Dubuque Regional Airport (21.1 miles)

  • Lowest 17 October, 2026

    30.7 °F

  • Average October

    58.9 °F

  • Highest 12 October, 2026

    86.6 °F

Climate (2021–2026)

Dubuque Regional Airport (21.1 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    50.2 °F

  • Average High 2021–2026

    59.5 °F
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