Portsmouth Charter Township Weather Forecast

    • 47
    • 66

    Decreasing Clouds

    • 49
    • 69

    Mostly Sunny

    • 48
    • 70

    Mostly Sunny

    • 46
    • 70

    Mostly Sunny

    • 54
    • 73

    Chance Rain Showers

    • 56
    • 72

    Chance Rain Showers

Today 25 Sep Bay

Mostly cloudy with a 40 percent chance of Showers. Highs around 70.

Tonight 25 Sep Bay

Mostly clear. Lows in the mid 40s. Northeast Winds up to 5 Mph.

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Portsmouth Charter Township Temperature Statistics

September Temperature

Saginaw County H W Browne Airport (8.7 miles)

  • Lowest 22 September, 2026

    44.6 °F

  • Average September

    65.4 °F

  • Highest 1 September, 2026

    89.6 °F

Climate (2021–2026)

Saginaw County H W Browne Airport (8.7 miles)

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  • Average Low 2021–2026

    40.7 °F

  • Average 2021–2026

    49.7 °F

  • Average High 2021–2026

    58.8 °F
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