Walnut Weather Forecast

    • 62
    • 86

    Becoming Sunny

    • 64
    • 89

    Mostly Sunny

    • 58
    • 89

    Mostly Sunny

    • 57
    • 81

    Mostly Cloudy

    • 54
    • 72

    Chance Rain

    • 54
    • 71

    Mostly Cloudy

Today 27 Mar Los Angeles County San Gabriel Valley

Areas of low Clouds and fog in the morning then sunny. Fog locally dense with visibility one quarter mile or less. Highs in the lower to mid 80s.

Tonight 27 Mar Los Angeles County San Gabriel Valley

Clear. Lows in the upper 50s to mid 60s.

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Walnut Temperature Statistics

March Temperature

Brackett Field Airport (6.8 miles)

  • Lowest 3 March, 2026

    48.2 °F

  • Average March

    72.1 °F

  • Highest 19 March, 2026

    96.8 °F

Climate (2021–Present)

Brackett Field Airport (6.8 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    68 °F

  • Average High 2021–2026

    76 °F
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