Grover Beach Weather Forecast

    • 56
    • 65

    Patchy Fog

    • 54
    • 62

    Chance Rain Showers

    • 53
    • 63

    Chance Rain Showers

    • 57
    • 62

    Rain Showers

    • 55
    • 61

    Rain Showers

    • 52
    • 60

    Rain Showers

    • 49
    • 59

    Rain Showers Likely

Today 20 Dec San Luis Obispo County Beaches

Sunny except for patchy low Clouds and fog in the morning. Fog locally dense with visibility one quarter mile or less. Highs in the 60s. West Winds around 15 Mph in the afternoon.

Tonight 20 Dec San Luis Obispo County Beaches

Low Clouds and fog. Lows in the mid 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grover Beach Temperature Statistics

December Temperature

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

  • Lowest 4 December, 2025

    37 °F

  • Average December

    57.6 °F

  • Highest 10 December, 2025

    82 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    50 °F

  • Average 2020–2025

    60.3 °F

  • Average High 2020–2025

    72.8 °F
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