Nampa Municipal Airport Weather Forecast

    • 55
    • 86

    Increasing Clouds

    • 58
    • 85

    Mostly Cloudy

    • 58
    • 83

    Mostly Sunny

    • 48
    • 80

    Mostly Sunny

    • 48
    • 77

    Sunny

    • 52
    • 83

    Partly Sunny

    • 54
    • 83

    Partly Sunny

Today 18 Sep Lower Treasure Valley

Sunny. Highs 83 to 88. East Winds up to 10 Mph with Gusts to 20 Mph.

Tonight 18 Sep Lower Treasure Valley

Mostly cloudy. Lows 55 to 60. Light Winds.

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Nampa Municipal Airport Temperature Statistics

September Temperature

Nampa Municipal Airport (0 miles)

  • Lowest 16 September, 2025

    46.4 °F

  • Average September

    70.8 °F

  • Highest 1 September, 2025

    100.4 °F

Climate (2020–Present)

Nampa Municipal Airport (0 miles)

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  • Average Low 2020–2025

    41.3 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    64.9 °F
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