O'Leary's Lake Recreation Area Weather Forecast

    • 65
    • 85

    Becoming Sunny

    • 58
    • 79

    Rain Showers Likely

    • 53
    • 69

    Rain Showers

    • 46
    • 65

    Rain Showers Likely

    • 35
    • 55

    Mostly Sunny

    • 39
    • 56

    Mostly Sunny

Today 12 Oct Grant

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

Tonight 12 Oct Grant

Partly cloudy. Lows in the lower 60s. Southwest Winds 10 to 15 Mph, becoming west after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

O'Leary's Lake Recreation Area Temperature Statistics

October Temperature

Dubuque Regional Airport (10.6 miles)

  • Lowest 5 October, 2026

    42.7 °F

  • Average October

    58.6 °F

  • Highest 6 October, 2026

    76.6 °F

Climate (2021–2026)

Dubuque Regional Airport (10.6 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    50.1 °F

  • Average High 2021–2026

    59.4 °F
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