Halcyon Weather Forecast

    • 50
    • 64

    Decreasing Clouds

    • 49
    • 64

    Breezy

    • 49
    • 66

    Breezy

    • 52
    • 75

    Mostly Sunny

    • 56
    • 76

    Mostly Sunny

    • 58
    • 81

    Patchy Fog

    • 56
    • 80

    Patchy Fog

Today 16 May San Luis Obispo County Beaches

Low Clouds and fog in the morning then partly cloudy. Highs from around 60 at the Beaches to around 70 inland. West Winds around 15 Mph in the afternoon.

Tonight 16 May San Luis Obispo County Beaches

Low Clouds and fog developing. Patchy drizzle after midnight. Lows around 50. Northwest Winds around 15 Mph.

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Halcyon Temperature Statistics

May Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (9.3 miles)

  • Lowest 12 May, 2025

    43.6 °F

  • Average May

    59.5 °F

  • Highest 9 May, 2025

    89.7 °F

Climate (2020–Present)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (9.3 miles)

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  • Average Low 2020–2025

    50 °F

  • Average 2020–2025

    60.2 °F

  • Average High 2020–2025

    72.9 °F
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