Cottonwood Bay Weather Forecast

    • 77
    • 103

    Hot

    • 69
    • 102

    Hot

    • 64
    • 95

    Breezy

    • 59
    • 86

    Breezy

    • 60
    • 86

    Mostly Sunny

    • 60
    • 88

    Mostly Sunny

Today 9 Sep West Side Mountains north of 198

Warmer, sunny. Highs 93 to 103. North Winds up to 10 Mph.

Tonight 9 Sep West Side Mountains north of 198

Mostly clear. Lows 75 to 81. West Winds up to 10 Mph.

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Cottonwood Bay Temperature Statistics

September Temperature

Hollister, CA (21.1 miles)

  • Lowest 2 September, 2026

    50 °F

  • Average September

    66 °F

  • Highest 7 September, 2026

    89.6 °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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