Lake San Antonio Weather Forecast

    • 67
    • 105

    Hot

    • 62
    • 104

    Hot

    • 56
    • 99

    Hot

    • 51
    • 90

    Sunny

    • 51
    • 86

    Mostly Sunny

    • 51
    • 88

    Mostly Sunny

    • 48
    • 82

    Mostly Sunny

Today 9 Sep Southern Salinas Valley/Arroyo Seco and Lake San Antonio

Sunny. Highs around 102. Northwest Winds 5 to 10 Mph.

Tonight 9 Sep Southern Salinas Valley/Arroyo Seco and Lake San Antonio

Mostly clear. Lows in the mid 60s. Northwest Winds 5 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake San Antonio Temperature Statistics

September Temperature

Paso Robles Municipal Airport (22.4 miles)

  • Lowest 7 September, 2026

    45 °F

  • Average September

    67.4 °F

  • Highest 7 September, 2026

    91.9 °F

Climate (2021–2026)

Paso Robles Municipal Airport (22.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    45.2 °F

  • Average 2021–2026

    60.8 °F

  • Average High 2021–2026

    77.9 °F
Get WillyWeather+ to remove ads