Fairfield Weather Forecast

    • 19
    • 41

    Becoming Sunny

    • 28
    • 38

    Partly Sunny

    • 35
    • 48

    Mostly Cloudy

    • 34
    • 49

    Mostly Cloudy

    • 45
    • 56

    Mostly Cloudy

    • 38
    • 62

    Partly Sunny

Today 20 Dec Jefferson

Partly sunny. Not as cool with Highs in the lower 40s. Temperature falling into the mid 30s late. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 20 Dec Jefferson

Mostly clear. Lows around 19. Northwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairfield Temperature Statistics

December Temperature

Fairfield Municipal Airport (3.1 miles)

  • Lowest 14 December, 2025

    -9.4 °F

  • Average December

    23 °F

  • Highest 9 December, 2025

    46.4 °F

Climate (2020–Present)

Fairfield Municipal Airport (3.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    41.5 °F

  • Average 2020–2025

    51.6 °F

  • Average High 2020–2025

    61.7 °F
Get WillyWeather+ to remove ads