Cottonwood Bay Weather Forecast

    • 43
    • 52

    Mostly Sunny

    • 46
    • 57

    Mostly Sunny

    • 47
    • 60

    Mostly Sunny

    • 46
    • 61

    Partly Sunny

    • 47
    • 60

    Partly Sunny

    • 48
    • 61

    Partly Sunny

    • 49
    • 62

    Partly Sunny

Today 4 Dec West Side Mountains north of 198

Mostly sunny. Highs in the lower 50s. Northeast Winds up to 5 Mph.

Tonight 4 Dec West Side Mountains north of 198

Mostly clear. Lows in the lower 40s. West Winds up to 5 Mph.

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Cottonwood Bay Temperature Statistics

December Temperature

Hollister, CA (21.1 miles)

  • Lowest 2 December, 2025

    35.6 °F

  • Average December

    47.3 °F

  • Highest 2 December, 2025

    66.2 °F

Climate (2020–Present)

Hollister, CA (21.1 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    57.6 °F

  • Average High 2020–2025

    72.4 °F
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