Boise City Weather Forecast

    • 26
    • 35

    Cloudy

    • 22
    • 37

    Decreasing Clouds

    • 21
    • 33

    Mostly Sunny

    • 24
    • 37

    Mostly Sunny

    • 26
    • 40

    Mostly Cloudy

    • 29
    • 43

    Mostly Cloudy

    • 31
    • 44

    Mostly Cloudy

Today 22 Jan Upper Treasure Valley

Patchy fog this morning. Cloudy. Highs 26 to 31. Light Winds.

Tonight 22 Jan Upper Treasure Valley

Cloudy. Lows 23 to 28. Light Winds.

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  • Temperature Real-Time

Boise City Temperature Statistics

January Temperature

Boise Air Terminal (6.2 miles)

  • Lowest 16 January, 2026

    24.1 °F

  • Average January

    34.8 °F

  • Highest 3 January, 2026

    57.9 °F

Climate (2021–Present)

Boise Air Terminal (6.2 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    66 °F
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