Ontonagon Weather Forecast
- 63
- 81
Slight Chance Thunderstorms
- 67
- 85
Rain Showers
- 64
- 81
Rain Showers
- 62
- 79
Chance Rain Showers
- 62
- 78
Partly Sunny
- 65
- 82
Partly Sunny
Today 21 Jul Ontonagon
Mostly sunny. Highs in the lower 80s. Southeast Winds 5 to 10 Mph.
Tonight 21 Jul Ontonagon
A slight chance of Showers and Thunderstorms after midnight. Mostly cloudy. Lows 59 to 64. Southeast Winds 5 to 10 Mph, becoming south after midnight. Chance of rain 20 percent.
Ontonagon Temperature Statistics
July Temperature
Houghton County Memorial Airport (44.1 miles)
Lowest 18 July, 2025
48.9 °FAverage July
66.5 °FHighest 4 July, 2025
84.7 °F
Climate (2020–Present)
Houghton County Memorial Airport (44.1 miles)
Average Low 2020–2025
35.8 °FAverage 2020–2025
44 °FAverage High 2020–2025
52 °F