Galster Wilderness Park Weather Forecast

    • 65
    • 83

    Patchy Fog

    • 68
    • 92

    Becoming Sunny

    • 69
    • 96

    Slight Chance Thunderstorms

    • 70
    • 96

    Partly Sunny

    • 68
    • 93

    Chance Rain Showers

    • 67
    • 90

    Chance Rain Showers

    • 64
    • 88

    Slight Chance Rain Showers

Today 14 Sep Los Angeles County San Gabriel Valley

Areas of low Clouds and fog in the morning then sunny. Highs in the mid to upper 80s.

Tonight 14 Sep Los Angeles County San Gabriel Valley

Clear in the evening then low Clouds and fog. Lows in the lower to mid 60s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Galster Wilderness Park Temperature Statistics

September Temperature

Brackett Field Airport (7.5 miles)

  • Lowest 9 September, 2025

    59 °F

  • Average September

    82.2 °F

  • Highest 2 September, 2025

    102.2 °F

Climate (2020–Present)

Brackett Field Airport (7.5 miles)

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  • Average Low 2020–2025

    55.6 °F

  • Average 2020–2025

    67.8 °F

  • Average High 2020–2025

    75.7 °F
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