Lake Upson Weather Forecast
- 58
- 67
Decreasing Clouds
- 67
- 73
Partly Sunny
- 64
- 76
Slight Chance Thunderstorms
- 59
- 69
Slight Chance Rain Showers
- 57
- 64
Slight Chance Rain Showers
- 61
- 66
Partly Sunny
Today 20 Aug Keweenaw
Mostly cloudy this Morning, then clearing. Highs in the upper 60s. North Winds 5 to 10 Mph.
Tonight 20 Aug Keweenaw
Mostly clear. Patchy fog. Lows around 57. Light west Winds, becoming southwest after midnight.
Lake Upson Temperature Statistics
August Temperature
Copper Harbor (7.5 miles)
Lowest 17 August, 2025
53.1 °FAverage August
70.9 °FHighest 8 August, 2025
86.6 °F
Climate (2020–Present)
Copper Harbor (7.5 miles)
Average Low 2020–2025
38.5 °FAverage 2020–2025
44.7 °FAverage High 2020–2025
50.8 °F