Colusa Weather Forecast

    • 50
    • 79

    Becoming Sunny

    • 56
    • 86

    Mostly Sunny

    • 56
    • 92

    Sunny

    • 57
    • 90

    Sunny

    • 58
    • 92

    Mostly Sunny

    • 57
    • 90

    Mostly Sunny

    • 57
    • 92

    Sunny

Today 27 Sep Eastern Colusa County

Mostly sunny. Highs around 92.

Tonight 27 Sep Eastern Colusa County

Mostly clear. Lows around 51. Light Winds.

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Colusa Temperature Statistics

September Temperature

Marysville, Yuba County Airport (24.9 miles)

  • Lowest 5 September, 2026

    50.6 °F

  • Average September

    72.6 °F

  • Highest 10 September, 2026

    104.6 °F

Climate (2021–2026)

Marysville, Yuba County Airport (24.9 miles)

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  • Average Low 2021–2026

    51 °F

  • Average 2021–2026

    63.9 °F

  • Average High 2021–2026

    77.2 °F
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