Oso Flaco Lake Weather Forecast

    • 53
    • 70

    Becoming Sunny

    • 53
    • 71

    Sunny

    • 56
    • 81

    Mostly Sunny

    • 56
    • 82

    Sunny

    • 54
    • 79

    Sunny

    • 54
    • 76

    Partly Sunny

    • 53
    • 74

    Patchy Fog

Today 21 Mar San Luis Obispo County Beaches

Partly cloudy. Highs in the upper 60s to mid 70s. West Winds around 15 Mph in the afternoon.

Tonight 21 Mar San Luis Obispo County Beaches

Partly cloudy in the evening then clear. Lows in the upper 40s and 50s. Northwest Winds around 15 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Oso Flaco Lake Temperature Statistics

March Temperature

Santa Maria Public Airport/Capt G Allan Hancock Field (13 miles)

  • Lowest 9 March, 2026

    40.6 °F

  • Average March

    62.6 °F

  • Highest 17 March, 2026

    95.6 °F

Climate (2021–Present)

Santa Maria Public Airport/Capt G Allan Hancock Field (13 miles)

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  • Average Low 2021–2026

    48.1 °F

  • Average 2021–2026

    57 °F

  • Average High 2021–2026

    69.1 °F
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