Gross Weather Forecast

    • 55
    • 83

    Increasing Clouds

    • 52
    • 81

    Partly Sunny

    • 55
    • 82

    Mostly Sunny

    • 57
    • 88

    Partly Sunny

    • 47
    • 77

    Slight Chance Rain Showers

    • 46
    • 73

    Partly Sunny

Today 21 Sep West Central Mountains

Areas of fog this morning. Sunny. Highs 68 to 81.

Tonight 21 Sep West Central Mountains

Increasing Clouds. Lows 42 to 54.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Gross Temperature Statistics

September Temperature

Ontario Municipal Airport (40.4 miles)

  • Lowest 15 September, 2026

    37.7 °F

  • Average September

    63.1 °F

  • Highest 10 September, 2026

    88.6 °F

Climate (2021–2026)

Ontario Municipal Airport (40.4 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    67.1 °F
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