Mountain House Weather Forecast

    • 57
    • 84

    Breezy

    • 58
    • 81

    Mostly Sunny

    • 59
    • 88

    Sunny

    • 60
    • 89

    Sunny

    • 60
    • 88

    Sunny

    • 60
    • 90

    Mostly Sunny

Today 12 Sep Tracy Triangle Below 1000 ft

Sunny. Highs around 86. West Winds up to 15 Mph with Gusts to around 30 Mph.

Tonight 12 Sep Tracy Triangle Below 1000 ft

Clear. Lows around 56. West Winds 10 to 20 Mph with Gusts to around 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain House Temperature Statistics

September Temperature

Livermore, Livermore Municipal Airport (15.5 miles)

  • Lowest 5 September, 2026

    50.6 °F

  • Average September

    71.4 °F

  • Highest 9 September, 2026

    102 °F

Climate (2021–2026)

Livermore, Livermore Municipal Airport (15.5 miles)

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  • Average Low 2021–2026

    49 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    74.1 °F
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