Groner Reservoir Weather Forecast

    • 32
    • 50

    Rain Showers

    • 32
    • 45

    Chance Snow Showers

    • 30
    • 51

    Chance Rain

    • 30
    • 51

    Chance Rain

    • 31
    • 55

    Mostly Sunny

    • 34
    • 60

    Sunny

Today 31 Mar Upper Weiser River

Widespread rain Showers and isolated Thunderstorms. Widespread snow Showers this afternoon. Chance of precipitation 90 percent. No snow accumulation. Highs 47 to 53. South Winds 10 to 15 Mph.

Tonight 31 Mar Upper Weiser River

Mostly cloudy with scattered rain and snow Showers, and isolated Thunderstorms in the Evening, then partly cloudy after midnight. Chance of precipitation 40 percent. Lows 29 to 34. Southwest Winds up to 10 Mph with Gusts to 20 Mph in the Evening, becoming light after midnight.

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Groner Reservoir Temperature Statistics

March Temperature

Ontario Municipal Airport (36.7 miles)

  • Lowest 19 March, 2025

    21.8 °F

  • Average March

    47.8 °F

  • Highest 26 March, 2025

    78.7 °F

Climate (2020–Present)

Ontario Municipal Airport (36.7 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    66.9 °F
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