Nampa Municipal Airport Weather Forecast

    • 57
    • 83

    Increasing Clouds

    • 62
    • 91

    Mostly Sunny

    • 47
    • 81

    Partly Sunny

    • 48
    • 69

    Mostly Cloudy

    • 47
    • 72

    Partly Sunny

    • 44
    • 70

    Mostly Sunny

    • 46
    • 72

    Mostly Sunny

Today 23 Sep Lower Treasure Valley

Patchy fog this morning. Sunny. Highs 81 to 86. Southeast Winds up to 10 Mph.

Tonight 23 Sep Lower Treasure Valley

Decreasing Clouds. Lows 54 to 59. East Winds 10 to 15 Mph.

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Nampa Municipal Airport Temperature Statistics

September Temperature

Nampa Municipal Airport (0 miles)

  • Lowest 15 September, 2026

    42.8 °F

  • Average September

    64.1 °F

  • Highest 12 September, 2026

    89.6 °F

Climate (2021–2026)

Nampa Municipal Airport (0 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    65.3 °F
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