San Luis Reservoir SPB Weather Forecast

    • 51
    • 63

    Rain Showers

    • 51
    • 65

    Slight Chance Thunderstorms

    • 53
    • 70

    Mostly Sunny

    • 55
    • 71

    Partly Sunny

    • 53
    • 65

    Partly Sunny

    • 52
    • 67

    Partly Sunny

    • 55
    • 71

    Partly Sunny

Today 21 Apr West Side Mountains north of 198

Cooler. Rain Showers and slight chance of Thunderstorms early in the Morning, then rain Showers and chance of Thunderstorms in the late morning and afternoon. Highs 56 to 64. Southwest Winds 5 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation near 100 percent.

Tonight 21 Apr West Side Mountains north of 198

Colder. Mostly cloudy in the evening then clearing. Chance of rain Showers and slight chance of Thunderstorms early in the Evening, then chance of rain late in the evening. Slight chance of rain after midnight. Lows 42 to 48. West Winds up to 15 Mph. Gusts up to 30 Mph in the evening. Chance of precipitation 50 percent.

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San Luis Reservoir SPB Temperature Statistics

April Temperature

Hollister, CA (19.3 miles)

  • Lowest 3 April, 2026

    37.4 °F

  • Average April

    59.1 °F

  • Highest 5 April, 2026

    87.8 °F

Climate (2021–Present)

Hollister, CA (19.3 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    57.9 °F

  • Average High 2021–2026

    72.7 °F
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