San Andreas Weather Forecast

    • 71
    • 98

    Chance Thunderstorms

    • 68
    • 98

    Hot

    • 66
    • 95

    Mostly Sunny

    • 64
    • 93

    Sunny

    • 63
    • 93

    Mostly Sunny

    • 61
    • 91

    Sunny

    • 59
    • 88

    Mostly Sunny

Today 3 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny this Morning, then partly cloudy with a slight chance of Showers and Thunderstorms this afternoon. Highs 94 to 99. Light Winds becoming west 10 to 15 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 3 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 66 to 71. Areas of Winds west 10 to 15 Mph this evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

San Andreas Temperature Statistics

September Temperature

San Bernardino Intl. Airport (3.1 miles)

  • Lowest 1 September, 2025

    67.6 °F

  • Average September

    80.9 °F

  • Highest 1 September, 2025

    100.4 °F

Climate (2020–Present)

San Bernardino Intl. Airport (3.1 miles)

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

  • Average Low 2020–2025

    54.1 °F

  • Average 2020–2025

    63.2 °F

  • Average High 2020–2025

    80.5 °F
Get WillyWeather+ to remove ads