Big Dalton Reservoir Weather Forecast

    • 68
    • 85

    Mostly Sunny

    • 68
    • 87

    Mostly Sunny

    • 68
    • 87

    Mostly Sunny

    • 69
    • 91

    Mostly Sunny

    • 70
    • 94

    Sunny

    • 69
    • 94

    Mostly Sunny

    • 69
    • 93

    Mostly Sunny

Today 21 Aug Eastern San Gabriel Mountains

Partly cloudy. A slight chance of Showers and Thunderstorms in the afternoon. Highs from the mid 80s to mid 90s at low Elevations to the mid 70s to around 80 at high Elevations. Southwest Winds 15 to 25 Mph in the afternoon.

Tonight 21 Aug Eastern San Gabriel Mountains

Partly cloudy. Lows in the mid 60s to mid 70s except the lower to mid 60s Colder Valleys and Slopes. Southwest Winds 15 to 25 Mph.

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Big Dalton Reservoir Temperature Statistics

August Temperature

Brackett Field Airport (5.6 miles)

  • Lowest 4 August, 2026

    64.4 °F

  • Average August

    81.5 °F

  • Highest 8 August, 2026

    98.6 °F

Climate (2021–2026)

Brackett Field Airport (5.6 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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