Fairfield Weather Forecast

    • 63
    • 85

    Mostly Sunny

    • 61
    • 80

    Mostly Sunny

    • 65
    • 83

    Chance Thunderstorms

    • 53
    • 80

    Mostly Sunny

    • 49
    • 72

    Mostly Sunny

    • 48
    • 70

    Partly Sunny

    • 49
    • 71

    Partly Sunny

Today 20 Aug Jefferson

Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the mid 80s. North Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 20 Aug Jefferson

Mostly clear. Patchy fog after midnight. Humid with Lows in the lower 60s. Northeast Winds 5 to 10 Mph, becoming east with Gusts up to 20 Mph after midnight.

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Fairfield Temperature Statistics

August Temperature

Fairfield Municipal Airport (3.1 miles)

  • Lowest 14 August, 2025

    57.2 °F

  • Average August

    77.7 °F

  • Highest 17 August, 2025

    93.2 °F

Climate (2020–Present)

Fairfield Municipal Airport (3.1 miles)

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  • Average Low 2020–2025

    41.4 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    61.6 °F
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