Arroyo Grande Weather Forecast

    • 54
    • 63

    Rain Showers

    • 50
    • 60

    Rain Showers

    • 49
    • 58

    Rain Showers Likely

    • 46
    • 61

    Slight Chance Rain Showers

    • 42
    • 61

    Partly Sunny

    • 41
    • 58

    Partly Sunny

    • 41
    • 61

    Mostly Sunny

Today 3 Jan San Luis Obispo County Beaches

Showers with a slight chance of Thunderstorms in the Morning, then a chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs in the upper 50s to mid 60s. South Winds 15 to 25 Mph.

Tonight 3 Jan San Luis Obispo County Beaches

Rain likely with a slight chance of Thunderstorms. Lows in the mid 50s. South Winds around 15 Mph. Chance of precipitation 70 percent.

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Arroyo Grande Temperature Statistics

January Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (8.1 miles)

  • Lowest 1 January, 2026

    48.9 °F

  • Average January

    57.6 °F

  • Highest 1 January, 2026

    63 °F

Climate (2021–Present)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (8.1 miles)

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  • Average Low 2021–2026

    50 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    72.8 °F
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