Gollaher Reservoir Weather Forecast
- 58
- 91
Chance Thunderstorms
- 57
- 92
Slight Chance Thunderstorms
- 56
- 86
Mostly Cloudy
- 49
- 77
Chance Rain Showers
- 48
- 72
Mostly Sunny
- 52
- 81
Partly Sunny
Today 26 Aug Cascade County below 5000ft
Sunny. Patchy smoke in the late morning and afternoon. A 20 percent chance of Thunderstorms late in the afternoon. Highs around 90. South Winds up to 5 Mph shifting to the east in the afternoon.
Tonight 26 Aug Cascade County below 5000ft
Mostly cloudy with a 20 percent chance of Thunderstorms. Patchy smoke. Lows in the upper 50s. South Winds up to 10 Mph.
Gollaher Reservoir Temperature Statistics
August Temperature
Great Falls, Great Falls International Airport (20.5 miles)
Lowest 4 August, 2026
38.6 °FAverage August
67.4 °FHighest 1 August, 2026
102.7 °F
Climate (2021–2026)
Great Falls, Great Falls International Airport (20.5 miles)
Average Low 2021–2026
34.3 °FAverage 2021–2026
46.9 °FAverage High 2021–2026
59.1 °F