Big Trinity Lake Weather Forecast

    • 17
    • 33

    Mostly Sunny

    • 23
    • 34

    Snow

    • 19
    • 31

    Snow

    • 12
    • 28

    Chance Snow

    • 17
    • 32

    Partly Sunny

    • 14
    • 33

    Slight Chance Snow Showers

Today 22 Feb Boise Mountains

Sunny. Highs 39 to 52.

Tonight 22 Feb Boise Mountains

Partly cloudy. Lows 18 to 33.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Trinity Lake Temperature Statistics

February Temperature

Boise Air Terminal (40.4 miles)

  • Lowest 18 February, 2026

    25 °F

  • Average February

    41.8 °F

  • Highest 7 February, 2026

    60.7 °F

Climate (2021–Present)

Boise Air Terminal (40.4 miles)

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

  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    66.1 °F
Get WillyWeather+ to remove ads