Cottonwood Bay Weather Forecast

    • 60
    • 81

    Sunny

    • 64
    • 92

    Sunny

    • 67
    • 93

    Sunny

    • 68
    • 96

    Mostly Sunny

    • 69
    • 95

    Mostly Sunny

    • 69
    • 96

    Sunny

Today 28 Sep West Side Mountains north of 198

Sunny. Highs 73 to 81. Northwest Winds 5 to 15 Mph with Gusts to around 30 Mph.

Tonight 28 Sep West Side Mountains north of 198

Clear. Lows 57 to 63. West Winds 5 to 15 Mph.

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Cottonwood Bay Temperature Statistics

September Temperature

Hollister, CA (21.1 miles)

  • Lowest 14 September, 2026

    48.2 °F

  • Average September

    66.4 °F

  • Highest 9 September, 2026

    105.8 °F

Climate (2021–2026)

Hollister, CA (21.1 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    58 °F

  • Average High 2021–2026

    72.8 °F
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