Cottonwood Bay Weather Forecast

    • 60
    • 86

    Sunny

    • 69
    • 93

    Sunny

    • 65
    • 96

    Mostly Sunny

    • 62
    • 87

    Mostly Sunny

    • 58
    • 85

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

Today 22 Sep West Side Mountains north of 198

Sunny. Highs 79 to 87. Southwest Winds up to 10 Mph shifting to the north in the afternoon. Gusts up to 25 Mph.

Tonight 22 Sep West Side Mountains north of 198

Clear. Lows 60 to 66. West Winds up to 5 Mph. Gusts up to 20 Mph in the evening.

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Cottonwood Bay Temperature Statistics

September Temperature

Hollister, CA (21.1 miles)

  • Lowest 14 September, 2026

    48.2 °F

  • Average September

    67.4 °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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