Muir Weather Forecast

    • 47
    • 73

    Mostly Sunny

    • 47
    • 74

    Mostly Sunny

    • 55
    • 75

    Chance Rain Showers

    • 59
    • 73

    Chance Rain Showers

Today 27 Sep Ionia

Sunny. Areas of fog in the morning. Highs in the lower 70s. Light Winds becoming northeast 5 to 10 Mph in the afternoon.

Tonight 27 Sep Ionia

Mostly clear. Lows in the mid 40s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Muir Temperature Statistics

September Temperature

Ionia County Airport (6.8 miles)

  • Lowest 14 September, 2026

    42.8 °F

  • Average September

    64.6 °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

    49.9 °F

  • Average High 2021–2026

    59 °F
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