Payette Municipal Airport Weather Forecast

    • 50
    • 81

    Chance Thunderstorms

    • 50
    • 76

    Partly Sunny

    • 50
    • 80

    Mostly Sunny

    • 51
    • 82

    Mostly Sunny

    • 52
    • 84

    Mostly Sunny

    • 51
    • 85

    Mostly Sunny

Today 17 Sep Lower Treasure Valley

Sunny. Areas of fog this morning. A chance of Showers and Thunderstorms, mainly this morning. Chance of rain 30 percent. Highs 78 to 83. Light Winds this Morning, becoming southwest 10 to 15 Mph this afternoon.

Tonight 17 Sep Lower Treasure Valley

Mostly clear. Lows 49 to 54. Southwest Winds up to 10 Mph. Gusts to 20 Mph in the evening.

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Payette Municipal Airport Temperature Statistics

September Temperature

Ontario Municipal Airport (7.5 miles)

  • Lowest 5 September, 2026

    42.7 °F

  • Average September

    62.2 °F

  • Highest 10 September, 2026

    88.6 °F

Climate (2021–2026)

Ontario Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    67.1 °F
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