Routzhan Park Weather Forecast

    • 44
    • 78

    Mostly Sunny

    • 42
    • 73

    Mostly Sunny

    • 42
    • 72

    Mostly Sunny

    • 47
    • 71

    Mostly Sunny

    • 47
    • 67

    Mostly Sunny

    • 45
    • 64

    Mostly Sunny

Today 21 May Santa Lucia Mountains

Patchy low Clouds and fog. Fog locally dense with visibility one quarter mile or less. Highs in the upper 70s and 80s except the lower to mid 70s closer to the coast.

Tonight 21 May Santa Lucia Mountains

Mostly clear. Lows in the mid 40s to mid 50s. West wind around 15 Mph in the evening.

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Routzhan Park Temperature Statistics

May Temperature

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

  • Lowest 18 May, 2026

    43 °F

  • Average May

    60.8 °F

  • Highest 19 May, 2026

    86 °F

Climate (2021–Present)

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

    60.8 °F

  • Average High 2021–2026

    73.2 °F
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