Rowland Heights Weather Forecast

    • 64
    • 86

    Patchy Fog

    • 63
    • 85

    Mostly Cloudy

    • 61
    • 82

    Partly Sunny

    • 64
    • 82

    Mostly Sunny

    • 66
    • 88

    Mostly Sunny

    • 67
    • 90

    Mostly Sunny

    • 67
    • 89

    Mostly Sunny

Today 19 Sep Los Angeles County San Gabriel Valley

Partly cloudy in the morning then sunny. Highs in the mid 80s to around 90.

Tonight 19 Sep Los Angeles County San Gabriel Valley

Mostly clear in the evening then low Clouds and fog. Lows in the upper 50s to mid 60s.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Rowland Heights Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (8.1 miles)

  • Lowest 2 September, 2026

    63.6 °F

  • Average September

    78.6 °F

  • Highest 9 September, 2026

    108.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (8.1 miles)

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

  • Average Low 2021–2026

    57.1 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    76.9 °F
Get WillyWeather+ to remove ads