Rancho Llano Seco Weather Forecast

    • 62
    • 96

    Increasing Clouds

    • 65
    • 90

    Mostly Cloudy

    • 62
    • 79

    Slight Chance Rain Showers

    • 61
    • 87

    Mostly Sunny

    • 62
    • 90

    Sunny

    • 63
    • 94

    Mostly Sunny

    • 61
    • 83

    Chance Rain Showers

Today 17 Sep Central Sacramento Valley

Sunny. Highs around 95. Northwest Winds up to 10 Mph.

Tonight 17 Sep Central Sacramento Valley

Mostly clear. Lows 61 to 71. Light Winds.

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Rancho Llano Seco Temperature Statistics

September Temperature

Chico Municipal Airport (13.7 miles)

  • Lowest 15 September, 2025

    60.8 °F

  • Average September

    73.9 °F

  • Highest 1 September, 2025

    102.2 °F

Climate (2020–Present)

Chico Municipal Airport (13.7 miles)

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  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    61.2 °F

  • Average High 2020–2025

    75.4 °F
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