Arroyo Grande Weather Forecast

    • 63
    • 76

    Decreasing Clouds

    • 61
    • 86

    Partly Sunny

    • 56
    • 81

    Partly Sunny

    • 57
    • 70

    Partly Sunny

    • 59
    • 72

    Partly Sunny

    • 58
    • 73

    Partly Sunny

Today 14 Jul San Luis Obispo County Beaches

Mostly cloudy in the morning then sunny. Highs from the mid 60s to around 70 at the Beaches to around 80 inland. West Winds around 15 Mph in the afternoon.

Tonight 14 Jul San Luis Obispo County Beaches

Mostly clear in the evening then partly cloudy. Lows in the lower 60s. Northwest Winds around 15 Mph in the evening.

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Arroyo Grande Temperature Statistics

July Temperature

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

  • Lowest 3 July, 2026

    51.7 °F

  • Average July

    64.7 °F

  • Highest 10 July, 2026

    79.6 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    60.9 °F

  • Average High 2021–2026

    73.2 °F
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