Fairfield Weather Forecast

    • 72
    • 92

    Thunderstorms Likely

    • 63
    • 82

    Chance Thunderstorms

    • 57
    • 81

    Mostly Sunny

    • 65
    • 85

    Rain Showers Likely

    • 61
    • 84

    Chance Rain Showers

    • 62
    • 79

    Chance Rain Showers

Today 8 Sep Jefferson

Sunny, hot with Highs in the lower 90s. South Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 8 Sep Jefferson

Mostly clear in the Evening, then mostly cloudy with Showers and Thunderstorms likely after midnight. Humid with Lows in the lower 70s. Southeast Winds around 10 Mph, becoming southwest after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairfield Temperature Statistics

September Temperature

Fairfield Municipal Airport (3.1 miles)

  • Lowest 6 September, 2026

    69.8 °F

  • Average September

    82 °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

    41.4 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    62 °F
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