Big Trinity Lake Weather Forecast
- 2
- 31
Blowing Dust
- 19
- 27
Partly Sunny
- 30
- 41
Partly Sunny
- 33
- 52
Partly Sunny
- 36
- 56
Partly Sunny
- 37
- 56
Partly Sunny
Today 14 Mar Boise Mountains
Widespread rain and snow Showers. Areas of blowing dust this afternoon. Chance of precipitation near 100 percent. No snow accumulation across the lower Elevations, with snow accumulation up to 5 Inches over the Mountains. Highs 36 to 51. Windy. West Winds around 25 Mph with Gusts to 45 Mph this afternoon.
Tonight 14 Mar Boise Mountains
Decreasing Clouds. A slight chance of snow Showers in the evening. Areas of blowing dust in the evening. Chance of snow 20 percent. Much Colder with Lows 6 to 21. Blustery. Gusts to 45 Mph in the evening.
Big Trinity Lake Temperature Statistics
March Temperature
Boise Air Terminal (40.4 miles)
Lowest 11 March, 2026
30 °FAverage March
45.7 °FHighest 8 March, 2026
64.9 °F
Climate (2021–Present)
Boise Air Terminal (40.4 miles)
Average Low 2021–2026
44.1 °FAverage 2021–2026
54.9 °FAverage High 2021–2026
66.1 °F