Muir Weather Forecast
- 55
- 84
Mostly Sunny
- 57
- 86
Slight Chance Rain Showers
- 52
- 78
Partly Sunny
- 54
- 80
Mostly Cloudy
- 60
- 83
Chance Rain Showers
- 59
- 79
Chance Rain Showers
- 55
- 78
Slight Chance Thunderstorms
Today 17 Sep Ionia
Sunny. Highs in the mid 80s. Light Winds.
Tonight 17 Sep Ionia
Mostly clear. Lows in the mid 50s. Southwest Winds around 5 Mph in the evening becoming light.
Muir Temperature Statistics
September Temperature
Ionia County Airport (6.8 miles)
Lowest 8 September, 2025
35.6 °FAverage September
60.6 °FHighest 14 September, 2025
82.4 °F
Climate (2020–Present)
Ionia County Airport (6.8 miles)
Average Low 2020–2025
40.9 °FAverage 2020–2025
50 °FAverage High 2020–2025
58.9 °F