Cottonwood Bay Weather Forecast

    • 59
    • 85

    Sunny

    • 65
    • 90

    Sunny

    • 71
    • 93

    Partly Sunny

    • 76
    • 97

    Hot

    • 72
    • 100

    Hot

    • 66
    • 94

    Mostly Sunny

Today 6 Sep West Side Mountains north of 198

Sunny. Highs 78 to 86. West Winds up to 10 Mph with Gusts to around 25 Mph.

Tonight 6 Sep West Side Mountains north of 198

Clear. Lows 57 to 63. West Winds up to 10 Mph. Gusts up to 25 Mph in the evening.

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Cottonwood Bay Temperature Statistics

September Temperature

Hollister, CA (21.1 miles)

  • Lowest 2 September, 2026

    50 °F

  • Average September

    65 °F

  • Highest 4 September, 2026

    80.6 °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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