Grover Beach Weather Forecast

    • 43
    • 72

    Increasing Clouds

    • 42
    • 71

    Becoming Sunny

    • 43
    • 70

    Mostly Sunny

    • 50
    • 70

    Partly Sunny

    • 49
    • 67

    Patchy Fog

    • 48
    • 65

    Patchy Fog

    • 49
    • 63

    Partly Sunny

Today 17 Jan San Luis Obispo County Beaches

Mostly cloudy. Highs in the upper 60s to mid 70s.

Tonight 17 Jan San Luis Obispo County Beaches

Mostly cloudy. Lows in the mid 30s to mid 40s except the lower to mid 50s in the Hills.

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Grover Beach Temperature Statistics

January Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (7.5 miles)

  • Lowest 10 January, 2026

    35.1 °F

  • Average January

    54.6 °F

  • Highest 14 January, 2026

    81 °F

Climate (2021–Present)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (7.5 miles)

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  • Average Low 2021–2026

    50 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    72.7 °F
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