San Gabriel Reservoir Weather Forecast

    • 47
    • 69

    Chance Rain

    • 48
    • 73

    Partly Sunny

    • 50
    • 78

    Sunny

    • 50
    • 86

    Sunny

    • 52
    • 82

    Sunny

    • 54
    • 87

    Mostly Sunny

Today 27 May Eastern San Gabriel Mountains

Mostly cloudy with a slight chance of Showers, snow Showers and patchy drizzle in the Morning, becoming partly cloudy with a chance of rain and snow Showers in the afternoon. No snow accumulation. Snow level 6000 to 6500 feet increasing to 6500 to 7000 feet late. Highs from the upper 50s and 60s at low Elevations to the mid 40s to lower 50s at high Elevations. South Winds 15 to 25 Mph.

Tonight 27 May Eastern San Gabriel Mountains

Mostly cloudy in the evening then partly cloudy. Lows in the mid 30s to mid 40s. South Winds 15 to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Gabriel Reservoir Temperature Statistics

May Temperature

Brackett Field Airport (9.3 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    68.4 °F

  • Highest 11 May, 2026

    89.6 °F

Climate (2021–Present)

Brackett Field Airport (9.3 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    68.1 °F

  • Average High 2021–2026

    76 °F
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