Big Dalton Reservoir Weather Forecast

    • 67
    • 87

    Sunny

    • 67
    • 89

    Mostly Sunny

    • 68
    • 89

    Mostly Cloudy

    • 66
    • 87

    Chance Rain Showers

    • 64
    • 81

    Chance Thunderstorms

    • 63
    • 81

    Slight Chance Thunderstorms

Today 15 Sep Eastern San Gabriel Mountains

Sunny. Highs from the 80s to lower 90s at low Elevations to the upper 60s to mid 70s at high Elevations.

Tonight 15 Sep Eastern San Gabriel Mountains

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Dalton Reservoir Temperature Statistics

September Temperature

Brackett Field Airport (5.6 miles)

  • Lowest 9 September, 2025

    59 °F

  • Average September

    81.5 °F

  • Highest 2 September, 2025

    102.2 °F

Climate (2020–Present)

Brackett Field Airport (5.6 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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