O'Leary's Lake Recreation Area Weather Forecast

    • 29
    • 52

    Becoming Sunny

    • 36
    • 59

    Mostly Sunny

    • 48
    • 66

    Partly Sunny

    • 47
    • 73

    Rain

    • 26
    • 55

    Chance Rain

    • 24
    • 40

    Partly Sunny

Today 11 Mar Grant

Mostly sunny. Much cooler with Highs in the lower 50s. Northeast Winds 5 to 10 Mph.

Tonight 11 Mar Grant

Partly cloudy. Lows in the upper 20s. East Winds 5 to 10 Mph.

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  • Temperature Real-Time

O'Leary's Lake Recreation Area Temperature Statistics

March Temperature

Dubuque Regional Airport (10.6 miles)

  • Lowest 2 March, 2025

    13.7 °F

  • Average March

    35.1 °F

  • Highest 9 March, 2025

    57.9 °F

Climate (2020–Present)

Dubuque Regional Airport (10.6 miles)

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  • Average Low 2020–2025

    40.2 °F

  • Average 2020–2025

    49.4 °F

  • Average High 2020–2025

    58.6 °F
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