Big Trinity Lake Weather Forecast

    • 20
    • 31

    Slight Chance Snow Showers

    • 20
    • 32

    Mostly Sunny

    • 28
    • 37

    Mostly Cloudy

    • 27
    • 36

    Slight Chance Snow Showers

    • 24
    • 36

    Chance Snow Showers

    • 20
    • 32

    Slight Chance Snow Showers

Today 27 Oct Boise Mountains

Areas of fog in the morning. Mostly sunny. Highs 46 to 59.

Tonight 27 Oct Boise Mountains

Mostly cloudy with a chance of snow Showers this Evening, then partly cloudy after midnight. Areas of fog. Chance of snow 30 percent. Lows 25 to 37.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Trinity Lake Temperature Statistics

October Temperature

Boise Air Terminal (40.4 miles)

  • Lowest 24 October, 2026

    34 °F

  • Average October

    60.9 °F

  • Highest 4 October, 2026

    88.6 °F

Climate (2021–2026)

Boise Air Terminal (40.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    55 °F

  • Average High 2021–2026

    66.4 °F
Get WillyWeather+ to remove ads