Ontario Weather Forecast

    • 34
    • 48

    Rain Showers Likely

    • 41
    • 52

    Rain

    • 43
    • 63

    Rain

    • 33
    • 56

    Rain Showers

    • 29
    • 53

    Chance Rain Showers

    • 36
    • 56

    Mostly Cloudy

Today 14 Mar Oregon Lower Treasure Valley

Partly sunny this Morning, then mostly cloudy with scattered rain and snow Showers this afternoon. Chance of precipitation 30 percent. Highs 44 to 49. Light Winds this Morning, becoming southeast 10 to 15 Mph this afternoon.

Tonight 14 Mar Oregon Lower Treasure Valley

Mostly cloudy with a chance of Rain, mixed with snow after midnight. Chance of precipitation 40 percent. Lows 32 to 37. South Winds 10 to 15 Mph with Gusts to 25 Mph.

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Ontario Temperature Statistics

March Temperature

Ontario Municipal Airport (1.9 miles)

  • Lowest 8 March, 2025

    28 °F

  • Average March

    45.9 °F

  • Highest 9 March, 2025

    64.9 °F

Climate (2020–Present)

Ontario Municipal Airport (1.9 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    66.9 °F
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