Etiwanda Weather Forecast

    • 57
    • 76

    Breezy

    • 55
    • 80

    Breezy

    • 54
    • 79

    Sunny

    • 53
    • 78

    Mostly Sunny

    • 53
    • 78

    Mostly Sunny

    • 52
    • 78

    Mostly Sunny

Today 13 Jan San Bernardino and Riverside County Valleys-The Inland Empire

Sunny. Highs 73 to 78. Areas of Winds north 10 to 20 Mph with Gusts to 35 Mph.

Tonight 13 Jan San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 45 to 49 in wind Sheltered Areas to 49 to 56 in warmer Locations. Areas of Winds north 10 to 15 Mph with Gusts to 30 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Etiwanda Temperature Statistics

January Temperature

Ontario International Airport (5.6 miles)

  • Lowest 8 January, 2026

    46 °F

  • Average January

    56.4 °F

  • Highest 10 January, 2026

    68 °F

Climate (2021–Present)

Ontario International Airport (5.6 miles)

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

  • Average Low 2021–2026

    55.6 °F

  • Average 2021–2026

    66.6 °F

  • Average High 2021–2026

    78.9 °F
Get WillyWeather+ to remove ads