San Luis Reservoir State Recreation Area Weather Forecast

    • 51
    • 55

    Mostly Cloudy

    • 49
    • 55

    Chance Rain

    • 50
    • 50

    Rain Likely

    • 51
    • 60

    Rain Showers

    • 51
    • 58

    Rain Likely

    • 53
    • 57

    Rain

Today 18 Dec West Side Mountains north of 198

Partly sunny. Areas of dense fog early in the morning. Patchy fog late in the morning. Highs 54 to 68. East Winds up to 5 Mph.

Tonight 18 Dec West Side Mountains north of 198

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog in the evening. Areas of dense fog after midnight. Lows in the mid 40s. Southwest Winds up to 5 Mph.

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  • Temperature Real-Time

San Luis Reservoir State Recreation Area Temperature Statistics

December Temperature

Hollister, CA (21.1 miles)

  • Lowest 4 December, 2025

    33.8 °F

  • Average December

    46.7 °F

  • Highest 16 December, 2025

    68 °F

Climate (2020–Present)

Hollister, CA (21.1 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    72.3 °F
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