Cottonwood Bay Weather Forecast

    • 57
    • 81

    Breezy

    • 59
    • 82

    Mostly Sunny

    • 63
    • 89

    Sunny

    • 63
    • 91

    Partly Sunny

    • 61
    • 89

    Partly Sunny

    • 62
    • 89

    Mostly Sunny

Today 16 Sep West Side Mountains north of 198

Sunny. Highs 76 to 86. Southwest Winds 5 to 15 Mph with Gusts to around 40 Mph.

Tonight 16 Sep West Side Mountains north of 198

Mostly clear. Lows 52 to 58. West Winds up to 15 Mph with Gusts to around 35 Mph.

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Cottonwood Bay Temperature Statistics

September Temperature

Hollister, CA (21.1 miles)

  • Lowest 2 September, 2026

    50 °F

  • Average September

    69 °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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