Ontario Weather Forecast

    • 43
    • 57

    Increasing Clouds

    • 47
    • 58

    Chance Rain Showers

    • 50
    • 67

    Slight Chance Rain Showers

    • 55
    • 66

    Rain Showers

    • 52
    • 68

    Rain Showers Likely

    • 44
    • 64

    Chance Rain Showers

Today 30 Oct Vernon

Mostly sunny in the Morning, then becoming mostly cloudy. Highs in the mid 50s. East Winds around 5 Mph.

Tonight 30 Oct Vernon

Cloudy. A chance of rain Showers after midnight. Warmer with Lows in the mid 40s. Southeast Winds 5 to 10 Mph. Chance of rain 40 percent.

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  • Temperature Real-Time

Ontario Temperature Statistics

October Temperature

Sparta, Sparta / Fort McCoy Airport (17.4 miles)

  • Lowest 17 October, 2026

    24.8 °F

  • Average October

    57.6 °F

  • Highest 10 October, 2026

    86.7 °F

Climate (2021–2026)

Sparta, Sparta / Fort McCoy Airport (17.4 miles)

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  • Average Low 2021–2026

    35.3 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    58.5 °F
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