Big Bay Weather Forecast
- 44
- 52
Rain Showers
- 36
- 47
Rain Showers
- 35
- 43
Rain/Snow
- 31
- 42
Mostly Cloudy
- 36
- 44
Partly Sunny
- 40
- 47
Partly Sunny
- 44
- 49
Slight Chance Rain Showers
Today 20 Oct Southern Cook/North Shore
Mostly cloudy with a 50 percent chance of Showers. Near steady temperature around 50. East Winds 10 to 15 Mph with Gusts up to 35 Mph.
Tonight 20 Oct Southern Cook/North Shore
Showers, mainly this evening. Lows in the lower 40s. Southeast Winds 5 to 10 Mph, becoming southwest after midnight. Gusts up to 35 Mph. Chance of rain near 100 percent.
Big Bay Temperature Statistics
October Temperature
Grand Marais, The Bay of Grand Marais (20.5 miles)
Lowest 7 October, 2025
37.9 °FAverage October
54.5 °FHighest 3 October, 2025
71.1 °F
Climate (2020–Present)
Grand Marais, The Bay of Grand Marais (20.5 miles)
Average Low 2020–2025
34 °FAverage 2020–2025
41.3 °FAverage High 2020–2025
48.5 °F