Monarch Grove Natural Area Weather Forecast

    • 51
    • 71

    Sunny

    • 52
    • 72

    Sunny

    • 51
    • 69

    Sunny

    • 52
    • 68

    Patchy Fog

    • 52
    • 66

    Patchy Fog

    • 51
    • 62

    Patchy Fog

    • 52
    • 63

    Mostly Sunny

Today 9 Dec San Luis Obispo County Beaches

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

Tonight 9 Dec San Luis Obispo County Beaches

Clear. Lows around 50. Northeast Winds 15 to 25 Mph.

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Monarch Grove Natural Area Temperature Statistics

December Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (13 miles)

  • Lowest 4 December, 2025

    37 °F

  • Average December

    53.8 °F

  • Highest 7 December, 2025

    75 °F

Climate (2020–Present)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (13 miles)

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  • Average Low 2020–2025

    49.9 °F

  • Average 2020–2025

    60.3 °F

  • Average High 2020–2025

    72.7 °F
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