Three Island Lake Weather Forecast

    • 46
    • 64

    Increasing Clouds

    • 40
    • 53

    Rain Showers Likely

    • 39
    • 57

    Sunny

    • 43
    • 61

    Sunny

    • 49
    • 65

    Sunny

    • 49
    • 66

    Sunny

Today 19 Jun Boise Mountains

Sunny. Highs 80 to 93.

Tonight 19 Jun Boise Mountains

Mostly cloudy. Lows 48 to 63.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Three Island Lake Temperature Statistics

June Temperature

Stanley, Stanley Ranger Station (18.6 miles)

  • Lowest 11 June, 2026

    20.6 °F

  • Average June

    49.2 °F

  • Highest 16 June, 2026

    77 °F

Climate (2021–2026)

Stanley, Stanley Ranger Station (18.6 miles)

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  • Average Low 2021–2026

    23.2 °F

  • Average 2021–2026

    38.5 °F

  • Average High 2021–2026

    54 °F
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