Cogswell Reservoir Weather Forecast

    • 76
    • 85

    Slight Chance Rain Showers

    • 78
    • 91

    Mostly Sunny

    • 74
    • 89

    Mostly Sunny

    • 67
    • 84

    Sunny

    • 63
    • 79

    Sunny

    • 63
    • 78

    Sunny

    • 62
    • 79

    Sunny

Today 8 Sep Eastern San Gabriel Mountains

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Morning, then a chance of Showers with a slight chance of Thunderstorms in the afternoon. Highs from the mid 80s to mid 90s at low Elevations to the 70s at high Elevations.

Tonight 8 Sep Eastern San Gabriel Mountains

Mostly clear. Lows in the mid 70s to lower 80s except the mid 50s to around 60 Colder Valleys and Slopes.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cogswell Reservoir Temperature Statistics

September Temperature

Palmdale, Palmdale Production Flight Plant (27.3 miles)

  • Lowest 2 September, 2026

    50.6 °F

  • Average September

    71.1 °F

  • Highest 5 September, 2026

    90.6 °F

Climate (2021–2026)

Palmdale, Palmdale Production Flight Plant (27.3 miles)

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  • Average Low 2021–2026

    49.9 °F

  • Average 2021–2026

    64 °F

  • Average High 2021–2026

    78.4 °F
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