Galster Wilderness Park Weather Forecast

    • 57
    • 77

    Decreasing Clouds

    • 55
    • 76

    Partly Sunny

    • 55
    • 75

    Mostly Sunny

    • 55
    • 78

    Mostly Sunny

    • 55
    • 78

    Mostly Sunny

    • 56
    • 80

    Mostly Sunny

Today 12 May Los Angeles County San Gabriel Valley

Patchy low Clouds and fog. Highs around 80.

Tonight 12 May Los Angeles County San Gabriel Valley

Patchy low Clouds and fog. Fog locally dense with visibility one quarter mile or less. Lows in the lower 60s.

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Galster Wilderness Park Temperature Statistics

May Temperature

Brackett Field Airport (7.5 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    67.3 °F

  • Highest 9 May, 2026

    82.4 °F

Climate (2021–Present)

Brackett Field Airport (7.5 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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