Fairchild Reservoir Weather Forecast

    • 39
    • 47

    Rain

    • 36
    • 44

    Rain

    • 29
    • 39

    Rain/Snow

    • 24
    • 33

    Partly Sunny

    • 25
    • 30

    Partly Sunny

    • 26
    • 31

    Partly Sunny

    • 28
    • 33

    Partly Sunny

Today 24 Dec Upper Weiser River

Rain. Patchy fog this afternoon. Chance of rain 90 percent. Highs 46 to 51. Southeast Winds 10 to 15 Mph with Gusts to 30 Mph.

Tonight 24 Dec Upper Weiser River

Rain. Areas of fog. Chance of rain 90 percent. Lows 34 to 39. Light Winds.

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Fairchild Reservoir Temperature Statistics

December Temperature

Ontario Municipal Airport (31.7 miles)

  • Lowest 1 December, 2025

    21 °F

  • Average December

    36.6 °F

  • Highest 17 December, 2025

    57 °F

Climate (2020–Present)

Ontario Municipal Airport (31.7 miles)

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  • Average Low 2020–2025

    42.8 °F

  • Average 2020–2025

    54.8 °F

  • Average High 2020–2025

    67.1 °F
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