Princeton Weather Forecast

    • 64
    • 88

    Increasing Clouds

    • 61
    • 79

    Slight Chance Rain Showers

    • 61
    • 87

    Mostly Sunny

    • 61
    • 89

    Sunny

    • 62
    • 92

    Mostly Sunny

    • 60
    • 83

    Chance Rain Showers

Today 18 Sep Central Sacramento Valley

Mostly cloudy. Highs around 89. Light Winds becoming south up to 10 Mph in the afternoon.

Tonight 18 Sep Central Sacramento Valley

Mostly cloudy. A slight chance of rain Showers in the Evening, then a slight chance of Showers and Thunderstorms after midnight. Lows around 66. Southeast Winds up to 10 Mph.

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Princeton Temperature Statistics

September Temperature

Oroville Municipal Airport (21.1 miles)

  • Lowest 7 September, 2025

    59 °F

  • Average September

    75.5 °F

  • Highest 1 September, 2025

    100 °F

Climate (2020–Present)

Oroville Municipal Airport (21.1 miles)

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  • Average Low 2020–2025

    53 °F

  • Average 2020–2025

    64.9 °F

  • Average High 2020–2025

    77.1 °F
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