Collinsville Weather Forecast

    • 61
    • 86

    Sunny

    • 63
    • 86

    Mostly Sunny

    • 65
    • 87

    Partly Sunny

    • 66
    • 89

    Mostly Sunny

    • 66
    • 86

    Sunny

    • 66
    • 86

    Mostly Sunny

Today 30 Sep Central Solano County Including Fairfield and Vacaville

Sunny. Highs around 91. Light Winds.

Tonight 30 Sep Central Solano County Including Fairfield and Vacaville

Clear. Lows 56 to 61. Southwest Winds up to 10 Mph.

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Collinsville Temperature Statistics

September Temperature

Concord, Buchanan Field (11.8 miles)

  • Lowest 23 September, 2026

    53.7 °F

  • Average September

    71.1 °F

  • Highest 9 September, 2026

    101.6 °F

Climate (2021–2026)

Concord, Buchanan Field (11.8 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    61.6 °F

  • Average High 2021–2026

    74.2 °F
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