Routzhan Park Weather Forecast

    • 57
    • 87

    Increasing Clouds

    • 51
    • 84

    Partly Sunny

    • 48
    • 71

    Mostly Sunny

    • 53
    • 76

    Sunny

    • 57
    • 85

    Sunny

    • 56
    • 86

    Sunny

Today 25 Sep Santa Lucia Mountains

Mostly cloudy in the morning then sunny. Highs in the mid 80s to around 90 except the upper 70s closer to the coast. Northwest Winds around 15 Mph in the afternoon.

Tonight 25 Sep Santa Lucia Mountains

Partly cloudy. Lows in the mid 50s to mid 60s. Northwest Winds around 15 Mph in the evening.

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Routzhan Park Temperature Statistics

September Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (9.3 miles)

  • Lowest 7 September, 2026

    49.6 °F

  • Average September

    68.8 °F

  • Highest 9 September, 2026

    107.7 °F

Climate (2021–2026)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (9.3 miles)

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    61.1 °F

  • Average High 2021–2026

    73.3 °F
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