O'Leary's Lake Recreation Area Weather Forecast

    • 50
    • 68

    Slight Chance Thunderstorms

    • 51
    • 79

    Rain Showers

    • 27
    • 52

    Chance Rain/Snow

    • 29
    • 44

    Mostly Sunny

    • 41
    • 57

    Partly Sunny

    • 41
    • 70

    Chance Rain/Snow

    • 27
    • 51

    Rain Likely

Today 13 Mar Grant

Mostly sunny. Near steady temperature in the mid 60s. Southeast Winds 5 to 10 Mph.

Tonight 13 Mar Grant

Partly cloudy. A slight chance of Showers and Thunderstorms after midnight. Not as cool with Lows in the upper 40s. Southeast Winds 10 to 15 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • 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

    37.2 °F

  • Highest 10 March, 2025

    68 °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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