Ontario Weather Forecast

    • 31
    • 39

    Snow

    • 28
    • 46

    Chance Rain/Snow

    • 29
    • 40

    Chance Rain/Snow

    • 29
    • 38

    Rain/Snow Likely

    • 23
    • 40

    Rain Likely

    • 15
    • 36

    Chance Snow

Today 31 Jan Oregon Lower Treasure Valley

Snow, Changing to rain this afternoon. Chance of precipitation near 100 percent. Snow accumulation up to 2 Inches across the lower Elevations, with no snow accumulation over the Mountains. Highs 36 to 41. Southeast Winds up to 10 Mph.

Tonight 31 Jan Oregon Lower Treasure Valley

Rain in the Evening, then a slight chance of rain and snow after midnight. Chance of precipitation 80 percent. No snow accumulation. Lows 28 to 33. South Winds up to 10 Mph.

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Ontario Temperature Statistics

January Temperature

Ontario Municipal Airport (1.9 miles)

  • Lowest 27 January, 2025

    10.9 °F

  • Average January

    33 °F

  • Highest 6 January, 2025

    51.7 °F

Climate (2020–Present)

Ontario Municipal Airport (1.9 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    67.1 °F
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