Meridian Weather Forecast

    • 47
    • 73

    Sunny

    • 51
    • 81

    Sunny

    • 52
    • 85

    Sunny

    • 54
    • 87

    Mostly Sunny

    • 56
    • 88

    Partly Sunny

    • 55
    • 85

    Partly Sunny

    • 51
    • 81

    Mostly Sunny

Today 15 Sep Upper Treasure Valley

Areas of fog this morning. Sunny. Highs 71 to 76. Northwest Winds 10 to 15 Mph with Gusts to 25 Mph.

Tonight 15 Sep Upper Treasure Valley

Mostly clear. Areas of fog after midnight. Lows 43 to 51. Northwest Winds 10 to 15 Mph. Gusts to 25 Mph this evening.

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Meridian Temperature Statistics

September Temperature

Nampa Municipal Airport (6.8 miles)

  • Lowest 12 September, 2025

    50 °F

  • Average September

    72.4 °F

  • Highest 1 September, 2025

    100.4 °F

Climate (2020–Present)

Nampa Municipal Airport (6.8 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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