O'Brien Lake Weather Forecast

    • 59
    • 79

    Chance Thunderstorms

    • 65
    • 84

    Chance Thunderstorms

    • 66
    • 86

    Rain Showers Likely

    • 52
    • 85

    Rain Showers Likely

    • 43
    • 62

    Partly Sunny

    • 46
    • 65

    Partly Sunny

Today 16 May Southern Berrien

Mostly cloudy with Showers likely with a chance of Thunderstorms in the Morning, then partly cloudy with a slight chance of Showers and Thunderstorms in the afternoon. More humid with Highs around 80. Southwest Winds around 10 Mph, becoming west in the afternoon. Gusts up to 25 Mph. Chance of rain 70 percent.

Tonight 16 May Southern Berrien

Partly cloudy with a chance of Showers and Thunderstorms. Not as cool. Near steady temperature around 60. South Winds around 10 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

O'Brien Lake Temperature Statistics

May Temperature

Southwest Michigan Regional Airport (13 miles)

  • Lowest 2 May, 2026

    30.7 °F

  • Average May

    48.9 °F

  • Highest 4 May, 2026

    76.6 °F

Climate (2021–Present)

Southwest Michigan Regional Airport (13 miles)

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  • Average Low 2021–2026

    43.4 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    60.8 °F
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