Michael J Kirwan Reservoir Weather Forecast

    • 49
    • 69

    Chance Rain Showers

    • 50
    • 73

    Partly Sunny

    • 52
    • 73

    Rain Showers Likely

    • 46
    • 69

    Slight Chance Rain Showers

    • 49
    • 73

    Partly Sunny

    • 53
    • 77

    Partly Sunny

Today 26 Aug Portage

Partly sunny with a chance of Showers. A slight chance of Thunderstorms this afternoon. Highs in the upper 60s. West Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 26 Aug Portage

Partly cloudy. A chance of Showers, mainly in the evening. Lows in the upper 40s. West Winds 5 to 10 Mph. Chance of rain 40 percent.

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Michael J Kirwan Reservoir Temperature Statistics

August Temperature

Portage County Airport (8.7 miles)

  • Lowest 2 August, 2025

    49.6 °F
  • Average August

    69.8 °F
  • Highest 12 August, 2025

    90.7 °F

Climate (2020–Present)

Portage County Airport (8.7 miles)

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  • Average Low 2020–2025

    40.9 °F
  • Average 2020–2025

    50.2 °F
  • Average High 2020–2025

    60 °F
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