La Sierra Hills Weather Forecast

    • 53
    • 72

    Gradual Clearing

    • 58
    • 85

    Mostly Sunny

    • 63
    • 90

    Mostly Sunny

    • 63
    • 93

    Mostly Sunny

    • 63
    • 93

    Partly Sunny

    • 61
    • 88

    Partly Sunny

Today 18 May San Bernardino and Riverside County Valleys-The Inland Empire

Cloudy this morning. Becoming mostly sunny. Patchy fog this morning. Warmer. Highs 71 to 76. Areas of Winds south to 10 Mph becoming southwest with Gusts to 25 Mph this afternoon.

Tonight 18 May San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 48 to 54. Areas of Winds southwest 10 to 15 Mph with Gusts to 25 Mph in the evening becoming light.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

La Sierra Hills Temperature Statistics

May Temperature

Riverside Municipal Airport (3.7 miles)

  • Lowest 15 May, 2025

    53.1 °F

  • Average May

    67.7 °F

  • Highest 10 May, 2025

    104.6 °F

Climate (2020–Present)

Riverside Municipal Airport (3.7 miles)

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

  • Average Low 2020–2025

    54.6 °F

  • Average 2020–2025

    66.6 °F

  • Average High 2020–2025

    79.9 °F
Get WillyWeather+ to remove ads