Muir Weather Forecast

    • 46
    • 77

    Slight Chance Rain Showers

    • 57
    • 72

    Chance Rain Showers

    • 58
    • 81

    Chance Thunderstorms

    • 58
    • 73

    Rain Showers Likely

    • 57
    • 76

    Chance Rain Showers

    • 54
    • 74

    Chance Rain Showers

Today 13 Sep Ionia

Mostly sunny late in the morning then becoming mostly cloudy. A 40 percent chance of Showers in the afternoon. Highs in the mid 70s. Northwest Winds 5 to 15 Mph. Gusts up to 30 Mph in the afternoon.

Tonight 13 Sep Ionia

Mostly clear. A 20 percent chance of rain Showers in the evening. Lows in the mid 40s. Northwest Winds 5 to 10 Mph with Gusts to around 25 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Muir Temperature Statistics

September Temperature

Ionia County Airport (6.8 miles)

  • Lowest 11 September, 2026

    48.2 °F

  • Average September

    70.5 °F

  • Highest 2 September, 2026

    93.2 °F

Climate (2021–2026)

Ionia County Airport (6.8 miles)

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  • Average Low 2021–2026

    40.9 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    59 °F
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