San Luis Reservoir SPB Weather Forecast

    • 47
    • 55

    Decreasing Clouds

    • 48
    • 53

    Decreasing Clouds

    • 50
    • 58

    Mostly Sunny

    • 51
    • 60

    Mostly Sunny

    • 49
    • 60

    Mostly Sunny

    • 50
    • 59

    Mostly Sunny

    • 50
    • 60

    Partly Sunny

Today 7 Dec West Side Mountains north of 198

Mostly sunny. Patchy dense fog in the morning. Highs in the mid 50s. Northeast Winds up to 5 Mph.

Tonight 7 Dec West Side Mountains north of 198

Partly cloudy. Near steady temperature in the lower 40s. North Winds up to 5 Mph.

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San Luis Reservoir SPB Temperature Statistics

December Temperature

Hollister, CA (19.3 miles)

  • Lowest 4 December, 2025

    33.8 °F

  • Average December

    46.5 °F

  • Highest 2 December, 2025

    66.2 °F

Climate (2020–Present)

Hollister, CA (19.3 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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