Whale Rock Reservoir Weather Forecast

    • 57
    • 64

    Breezy

    • 52
    • 68

    Breezy

    • 54
    • 70

    Sunny

    • 53
    • 67

    Sunny

    • 53
    • 64

    Sunny

    • 53
    • 62

    Mostly Sunny

    • 52
    • 59

    Partly Sunny

Today 8 Dec San Luis Obispo County Beaches

Sunny. Highs in the mid 60s to lower 70s. North Winds 15 to 25 Mph.

Tonight 8 Dec San Luis Obispo County Beaches

Clear. Lows in the mid 40s to mid 50s. North Winds 15 to 25 Mph.

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Whale Rock Reservoir Temperature Statistics

December Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (19.9 miles)

  • Lowest 4 December, 2025

    37 °F

  • Average December

    52.6 °F

  • Highest 6 December, 2025

    73.9 °F

Climate (2020–Present)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (19.9 miles)

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  • Average Low 2020–2025

    49.9 °F

  • Average 2020–2025

    60.3 °F

  • Average High 2020–2025

    72.8 °F
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