Cannon Lake Weather Forecast
- 40
- 58
Mostly Sunny
- 46
- 71
Mostly Sunny
- 48
- 76
Mostly Sunny
- 36
- 65
Rain Showers Likely
- 34
- 47
Chance Rain Showers
- 40
- 61
Mostly Sunny
- 47
- 72
Mostly Sunny
Today 1 May Big Belt
Partly cloudy. Highs 50 to 60. Northwest Winds up to 10 Mph.
Tonight 1 May Big Belt
Mostly clear. Lows 35 to 40. Northeast Winds up to 10 Mph shifting to the southeast after midnight.
Cannon Lake Temperature Statistics
May Temperature
Helena Regional Airport (31.1 miles)
Lowest
–Average May
–Highest
–
Climate (2020–Present)
Helena Regional Airport (31.1 miles)
Average Low 2020–2025
36.1 °FAverage 2020–2025
47.4 °FAverage High 2020–2025
59.2 °F