Groner Reservoir Weather Forecast

    • 35
    • 58

    Mostly Sunny

    • 36
    • 61

    Partly Sunny

    • 38
    • 61

    Partly Sunny

    • 43
    • 65

    Rain Showers

    • 35
    • 55

    Rain Showers

    • 30
    • 47

    Rain Showers Likely

Today 21 Oct Upper Weiser River

Areas of fog this morning. Sunny. Highs 54 to 61. Light Winds.

Tonight 21 Oct Upper Weiser River

Decreasing Clouds. Lows 34 to 39. Light Winds.

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  • Temperature Real-Time

Groner Reservoir Temperature Statistics

October Temperature

Ontario Municipal Airport (36.7 miles)

  • Lowest 7 October, 2025

    36 °F

  • Average October

    55 °F

  • Highest 10 October, 2025

    80.1 °F

Climate (2020–Present)

Ontario Municipal Airport (36.7 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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