Big Trinity Lake Weather Forecast
- 41
- 64
Decreasing Clouds
- 37
- 64
Decreasing Clouds
- 39
- 60
Sunny
- 44
- 66
Sunny
- 40
- 69
Mostly Sunny
- 31
- 58
Mostly Sunny
- 25
- 46
Slight Chance Rain Showers
Today 15 Jun Boise Mountains
Mostly sunny. Highs 72 to 86.
Tonight 15 Jun Boise Mountains
Partly cloudy. Lows 43 to 58.
Big Trinity Lake Temperature Statistics
June Temperature
Boise Air Terminal (40.4 miles)
Lowest 4 June, 2025
45.6 °FAverage June
72.4 °FHighest 9 June, 2025
96.7 °F
Climate (2020–Present)
Boise Air Terminal (40.4 miles)
Average Low 2020–2025
43.7 °FAverage 2020–2025
54.4 °FAverage High 2020–2025
65.7 °F