Fairfax Weather Forecast

    • 39
    • 59

    Increasing Clouds

    • 44
    • 66

    Partly Sunny

    • 39
    • 67

    Chance Rain

    • 28
    • 45

    Rain

    • 27
    • 36

    Rain Likely

    • 17
    • 38

    Partly Sunny

Today 21 Jan Allendale

Mostly sunny. Highs in the upper 50s. Light and variable Winds.

Tonight 21 Jan Allendale

Mostly cloudy. Lows in the upper 30s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairfax Temperature Statistics

January Temperature

Allendale County Airport (3.1 miles)

  • Lowest 16 January, 2026

    19.4 °F

  • Average January

    49.7 °F

  • Highest 10 January, 2026

    80.6 °F

Climate (2021–Present)

Allendale County Airport (3.1 miles)

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  • Average Low 2021–2026

    55.6 °F

  • Average 2021–2026

    65.3 °F

  • Average High 2021–2026

    76.3 °F
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