Los Osos Weather Forecast

    • 54
    • 67

    Rain Likely

    • 56
    • 65

    Chance Rain

    • 47
    • 66

    Chance Rain

    • 52
    • 71

    Mostly Sunny

    • 53
    • 76

    Mostly Sunny

    • 53
    • 75

    Partly Sunny

Today 31 Mar San Luis Obispo County Beaches

Low Clouds and fog in the morning. A chance of rain in the Morning, then rain likely in the afternoon. Highs in the 60s. Chance of precipitation 70 percent.

Tonight 31 Mar San Luis Obispo County Beaches

Mostly cloudy with a 50 percent chance of rain. Lows in the upper 40s to mid 50s.

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Los Osos Temperature Statistics

March Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (12.4 miles)

  • Lowest 7 March, 2026

    41.6 °F

  • Average March

    65.6 °F

  • Highest 17 March, 2026

    97.6 °F

Climate (2021–Present)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (12.4 miles)

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    60.7 °F

  • Average High 2021–2026

    73.1 °F
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