San Luis Reservoir SPB Weather Forecast

    • 61
    • 82

    Sunny

    • 63
    • 85

    Partly Sunny

    • 61
    • 84

    Mostly Sunny

    • 61
    • 82

    Breezy

    • 61
    • 82

    Mostly Sunny

    • 59
    • 82

    Mostly Sunny

    • 57
    • 77

    Mostly Sunny

Today 31 May West Side Mountains north of 198

Warmer, sunny. Highs 78 to 88. Northwest Winds up to 10 Mph.

Tonight 31 May West Side Mountains north of 198

Clear. Lows 58 to 64. West Winds up to 15 Mph.

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San Luis Reservoir SPB Temperature Statistics

May Temperature

Hollister, CA (19.3 miles)

  • Lowest 14 May, 2026

    42.8 °F

  • Average May

    60.4 °F

  • Highest 19 May, 2026

    89.6 °F

Climate (2021–Present)

Hollister, CA (19.3 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    72.7 °F
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