Groner Reservoir Weather Forecast

    • 50
    • 77

    Sunny

    • 50
    • 82

    Mostly Sunny

    • 42
    • 70

    Partly Sunny

    • 45
    • 66

    Partly Sunny

    • 47
    • 70

    Rain Showers Likely

    • 46
    • 69

    Rain Showers Likely

    • 43
    • 65

    Chance Rain Showers

Today 4 Jun Upper Weiser River

Sunny. Highs 74 to 80. West Winds around 10 Mph.

Tonight 4 Jun Upper Weiser River

Mostly clear. Lows 48 to 53. North Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Groner Reservoir Temperature Statistics

June Temperature

Ontario Municipal Airport (36.7 miles)

  • Lowest 1 June, 2026

    50.6 °F

  • Average June

    67.1 °F

  • Highest 2 June, 2026

    84 °F

Climate (2021–Present)

Ontario Municipal Airport (36.7 miles)

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  • Average Low 2021–2026

    42.8 °F

  • Average 2021–2026

    54.8 °F

  • Average High 2021–2026

    67.3 °F
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