Walnut Weather Forecast

    • 68
    • 96

    Mostly Sunny

    • 68
    • 98

    Hot

    • 68
    • 95

    Mostly Sunny

    • 68
    • 95

    Mostly Sunny

    • 68
    • 96

    Mostly Sunny

    • 68
    • 96

    Mostly Sunny

Today 19 Aug Los Angeles County San Gabriel Valley

Sunny. Highs 93 to 100.

Tonight 19 Aug Los Angeles County San Gabriel Valley

Mostly clear in the evening then partly cloudy. Lows in the mid 60s to around 70.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Walnut Temperature Statistics

August Temperature

Brackett Field Airport (6.8 miles)

  • Lowest 4 August, 2026

    64.4 °F

  • Average August

    81 °F

  • Highest 8 August, 2026

    98.6 °F

Climate (2021–2026)

Brackett Field Airport (6.8 miles)

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

  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    68 °F

  • Average High 2021–2026

    75.9 °F
Get WillyWeather+ to remove ads