Groner Reservoir Weather Forecast

    • 35
    • 58

    Patchy Smoke

    • 36
    • 61

    Mostly Sunny

    • 38
    • 61

    Partly Sunny

    • 41
    • 63

    Mostly Cloudy

    • 37
    • 52

    Rain Showers

    • 31
    • 47

    Rain Showers

Today 21 Oct Upper Weiser River

Patchy fog and smoke in the morning. Sunny. Highs 54 to 61. Light Winds.

Tonight 21 Oct Upper Weiser River

Decreasing Clouds. Patchy smoke. Lows 32 to 39. Light Winds.

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  • Temperature Forecast NOAA

  • 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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