Ontonagon Weather Forecast
- 49
- 58
Chance Rain Showers
- 50
- 56
Decreasing Clouds
- 58
- 68
Rain Showers Likely
- 55
- 64
Chance Rain Showers
- 51
- 66
Partly Sunny
- 51
- 66
Partly Sunny
- 55
- 67
Chance Rain Showers
Today 6 Sep Ontonagon
Mostly cloudy with a 40 percent chance of Showers. West Winds 5 to 15 Mph with Gusts up to 25 Mph.
Tonight 6 Sep Ontonagon
Mostly cloudy. A chance of rain Showers this evening. Lows in the mid 40s. West Winds 5 to 10 Mph, becoming northwest after midnight. Chance of rain 50 percent.
Ontonagon Temperature Statistics
September Temperature
Houghton County Memorial Airport (44.1 miles)
Lowest 4 September, 2025
44.1 °FAverage September
58.3 °FHighest 1 September, 2025
78.1 °F
Climate (2020–Present)
Houghton County Memorial Airport (44.1 miles)
Average Low 2020–2025
35.8 °FAverage 2020–2025
44.1 °FAverage High 2020–2025
52.1 °F