Fairfield Weather Forecast

    • 50
    • 64

    Chance Rain Showers

    • 53
    • 69

    Partly Sunny

    • 57
    • 69

    Mostly Cloudy

    • 56
    • 70

    Mostly Cloudy

    • 56
    • 64

    Chance Rain Showers

    • 57
    • 72

    Partly Sunny

    • 60
    • 74

    Partly Sunny

Today 22 Sep Jefferson

Mostly cloudy with a 40 percent chance of Showers. Highs in the mid 70s.

Tonight 22 Sep Jefferson

Mostly cloudy this Evening, then becoming partly cloudy. Lows around 50. Northeast Winds 5 to 10 Mph.

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Fairfield Temperature Statistics

September Temperature

Fairfield Municipal Airport (3.1 miles)

  • Lowest 13 September, 2026

    53.6 °F

  • Average September

    73.9 °F

  • Highest 1 September, 2026

    96.8 °F

Climate (2021–2026)

Fairfield Municipal Airport (3.1 miles)

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  • Average Low 2021–2026

    41.5 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    62 °F
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