Oso Flaco Lake Weather Forecast

    • 51
    • 62

    Rain

    • 45
    • 59

    Chance Rain

    • 45
    • 60

    Mostly Sunny

    • 46
    • 63

    Mostly Sunny

    • 49
    • 63

    Partly Sunny

    • 48
    • 66

    Mostly Sunny

Today 11 Apr San Luis Obispo County Beaches

Mostly cloudy. A slight chance of Showers in the Morning, then a chance of rain in the afternoon. Highs in the upper 50s to mid 60s. South Winds 15 to 25 Mph. Chance of precipitation 50 percent.

Tonight 11 Apr San Luis Obispo County Beaches

Rain in the Evening, then rain with a slight chance of Thunderstorms after midnight. Lows in the lower 50s. Southwest Winds 15 to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Oso Flaco Lake Temperature Statistics

April Temperature

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

  • Lowest 4 April, 2026

    43.6 °F

  • Average April

    61.7 °F

  • Highest 4 April, 2026

    87.7 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    57.1 °F

  • Average High 2021–2026

    69.3 °F
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