Long Lake Weather Forecast
- 55
- 67
Becoming Sunny
- 62
- 74
Partly Sunny
- 61
- 75
Mostly Sunny
- 62
- 76
Mostly Sunny
- 54
- 74
Chance Rain Showers
- 50
- 65
Chance Rain Showers
Today 29 Aug Keweenaw
Sunny. Highs 63 to 68. South Winds 5 to 10 Mph.
Tonight 29 Aug Keweenaw
Clear. Lows 50 to 55. Light south Winds, becoming southwest after midnight.
Long Lake Temperature Statistics
August Temperature
Copper Harbor (14.3 miles)
Lowest 17 August, 2025
53.7 °FAverage August
69.1 °FHighest 8 August, 2025
86.6 °F
Climate (2020–Present)
Copper Harbor (14.3 miles)
Average Low 2020–2025
38.5 °FAverage 2020–2025
44.7 °FAverage High 2020–2025
50.9 °F