McCarthy Park Weather Forecast
- 51
- 79
Mostly Sunny
- 54
- 85
Slight Chance Thunderstorms
- 51
- 79
Mostly Sunny
- 56
- 87
Mostly Sunny
- 52
- 84
Chance Rain Showers
Today 28 May Canyon Ferry Area
Sunny. Highs 75 to 80. Northeast Winds up to 10 Mph.
Tonight 28 May Canyon Ferry Area
Mostly clear. Lows around 50. East Winds up to 10 Mph.
McCarthy Park Temperature Statistics
May Temperature
Helena Regional Airport (29.8 miles)
Lowest 6 May, 2025
34.6 °FAverage May
55.4 °FHighest 10 May, 2025
88.6 °F
Climate (2020–Present)
Helena Regional Airport (29.8 miles)
Average Low 2020–2025
36.1 °FAverage 2020–2025
47.5 °FAverage High 2020–2025
59.3 °F