Oso Flaco Lake Weather Forecast

    • 55
    • 72

    Breezy

    • 55
    • 76

    Mostly Sunny

    • 56
    • 68

    Patchy Fog

    • 53
    • 65

    Patchy Fog

    • 57
    • 63

    Patchy Fog

    • 57
    • 62

    Patchy Fog

    • 57
    • 63

    Sunny

Today 20 Aug San Luis Obispo County Beaches

Sunny except for patchy low Clouds and fog in the morning. Fog locally dense with visibility one quarter mile or less. Highs from the upper 60s to mid 70s at the Beaches to the lower to mid 80s inland. West Winds 15 to 25 Mph in the afternoon.

Tonight 20 Aug San Luis Obispo County Beaches

Mostly clear. Lows in the mid 50s to lower 60s. Northwest Winds 15 to 25 Mph.

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Oso Flaco Lake Temperature Statistics

August Temperature

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

  • Lowest 4 August, 2025

    48.7 °F

  • Average August

    61 °F

  • Highest 6 August, 2025

    78.7 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    56.6 °F

  • Average High 2020–2025

    68.9 °F
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