Buttermilk Slough Weather Forecast

    • 48
    • 82

    Mostly Sunny

    • 50
    • 87

    Mostly Sunny

    • 42
    • 74

    Partly Sunny

    • 45
    • 71

    Partly Sunny

    • 46
    • 74

    Chance Rain Showers

    • 45
    • 74

    Chance Rain Showers

    • 43
    • 71

    Slight Chance Rain Showers

Today 4 Jun Lower Treasure Valley

Sunny. Highs 79 to 84. Northwest Winds 10 to 15 Mph.

Tonight 4 Jun Lower Treasure Valley

Mostly clear. Lows 49 to 54. North Winds 10 to 15 Mph this Evening, becoming light after midnight.

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Buttermilk Slough Temperature Statistics

June Temperature

Ontario Municipal Airport (13 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 (13 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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