Buttermilk Slough Weather Forecast

    • 19
    • 35

    Partly Sunny

    • 17
    • 34

    Mostly Sunny

    • 16
    • 31

    Partly Sunny

    • 17
    • 30

    Mostly Cloudy

    • 18
    • 34

    Partly Sunny

    • 20
    • 35

    Partly Sunny

Today 18 Jan Lower Treasure Valley

Mostly sunny. Highs 33 to 38. Northwest Winds up to 10 Mph.

Tonight 18 Jan Lower Treasure Valley

Partly cloudy. Lows 17 to 22. Light Winds.

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Buttermilk Slough Temperature Statistics

January Temperature

Ontario Municipal Airport (13 miles)

  • Lowest 14 January, 2025

    23 °F

  • Average January

    36.6 °F

  • Highest 6 January, 2025

    51.7 °F

Climate (2020–Present)

Ontario Municipal Airport (13 miles)

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  • Average Low 2020–2025

    42.6 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    67.1 °F
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