Big Trinity Lake Weather Forecast

    • 12
    • 30

    Blustery

    • 11
    • 20

    Blustery

    • 25
    • 31

    Snow

    • 28
    • 37

    Snow Likely

    • 30
    • 41

    Snow

    • 26
    • 37

    Snow Likely

    • 28
    • 39

    Chance Snow

Today 9 Mar Boise Mountains

Partly cloudy. A slight chance of snow Showers this morning. Patchy fog this morning. Chance of snow 20 percent. Cooler with Highs 36 to 49. Breezy.

Tonight 9 Mar Boise Mountains

Mostly cloudy. Colder with Lows 12 to 27.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Trinity Lake Temperature Statistics

March Temperature

Boise Air Terminal (40.4 miles)

  • Lowest 6 March, 2026

    32 °F

  • Average March

    44.6 °F

  • Highest 3 March, 2026

    60.1 °F

Climate (2021–Present)

Boise Air Terminal (40.4 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    54.9 °F

  • Average High 2021–2026

    66.1 °F
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