Weiser Weather Forecast

    • 31
    • 58

    Mostly Sunny

    • 34
    • 60

    Mostly Sunny

    • 35
    • 62

    Partly Sunny

    • 39
    • 65

    Partly Sunny

    • 42
    • 65

    Rain Showers

    • 38
    • 58

    Rain Showers Likely

Today 20 Oct Lower Treasure Valley

Sunny. Highs 54 to 59. Light Winds.

Tonight 20 Oct Lower Treasure Valley

Mostly clear. Widespread frost with Areas of dense fog after midnight. Lows 31 to 36. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Weiser Temperature Statistics

October Temperature

Ontario Municipal Airport (16.2 miles)

  • Lowest 7 October, 2025

    36 °F

  • Average October

    55 °F

  • Highest 10 October, 2025

    80.1 °F

Climate (2020–Present)

Ontario Municipal Airport (16.2 miles)

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  • Average Low 2020–2025

    42.6 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    67 °F
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