Westmont (Pomona) Weather Forecast

    • 60
    • 86

    Mostly Sunny

    • 57
    • 86

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 55
    • 80

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

Today 20 May Los Angeles County San Gabriel Valley

Sunny, hot with Highs in the mid 80s.

Tonight 20 May Los Angeles County San Gabriel Valley

Mostly clear in the Evening, becoming partly cloudy. Lows around 60.

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Westmont (Pomona) Temperature Statistics

May Temperature

Brackett Field Airport (2.5 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    67.3 °F

  • Highest 11 May, 2026

    89.6 °F

Climate (2021–Present)

Brackett Field Airport (2.5 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    68 °F

  • Average High 2021–2026

    76 °F
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