Spanish Flat Weather Forecast

    • 55
    • 86

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

    • 55
    • 82

    Mostly Sunny

    • 57
    • 86

    Sunny

    • 57
    • 89

    Mostly Sunny

    • 56
    • 87

    Mostly Sunny

Today 15 Sep North Bay Interior Mountains

Sunny. Highs in the 70s to mid 80s. Southeast Winds up to 5 Mph. Becoming southwest in the afternoon.

Tonight 15 Sep North Bay Interior Mountains

Mostly clear. Lows in the 50s. Southwest Winds 5 to 10 Mph in the evening. Becoming light.

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Spanish Flat Temperature Statistics

September Temperature

Vacaville Nut Tree Airport (18 miles)

  • Lowest 5 September, 2026

    49.6 °F

  • Average September

    73.3 °F

  • Highest 10 September, 2026

    107.7 °F

Climate (2021–2026)

Vacaville Nut Tree Airport (18 miles)

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  • Average Low 2021–2026

    49.3 °F

  • Average 2021–2026

    62.9 °F

  • Average High 2021–2026

    76.8 °F
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