Big Trinity Lake Weather Forecast
- 20
- 34
Increasing Clouds
- 28
- 47
Partly Sunny
- 31
- 52
Partly Sunny
- 32
- 49
Partly Sunny
- 29
- 45
Snow Showers Likely
- 27
- 37
Snow Showers Likely
- 23
- 35
Snow Showers
Today 26 Mar Boise Mountains
Sunny, cooler with Highs 41 to 54. Breezy.
Tonight 26 Mar Boise Mountains
Partly cloudy. Lows 16 to 31.
Big Trinity Lake Temperature Statistics
March Temperature
Boise Air Terminal (40.4 miles)
Lowest 15 March, 2026
25.6 °FAverage March
50.1 °FHighest 20 March, 2026
83.6 °F
Climate (2021–Present)
Boise Air Terminal (40.4 miles)
Average Low 2021–2026
44.2 °FAverage 2021–2026
54.9 °FAverage High 2021–2026
66.2 °F