Southside Weather Forecast

    • 48
    • 68

    Increasing Clouds

    • 51
    • 70

    Mostly Sunny

    • 56
    • 67

    Partly Sunny

    • 53
    • 72

    Mostly Sunny

    • 52
    • 73

    Partly Sunny

    • 53
    • 74

    Mostly Sunny

Today 20 Dec Coastal Duval

Sunny. Highs in the upper 60s. Northeast Winds around 5 Mph.

Tonight 20 Dec Coastal Duval

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 40s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Southside Temperature Statistics

December Temperature

Jacksonville Naval Air Station (5.6 miles)

  • Lowest 16 December, 2025

    39.9 °F

  • Average December

    57.3 °F

  • Highest 5 December, 2025

    79 °F

Climate (2020–Present)

Jacksonville Naval Air Station (5.6 miles)

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  • Average Low 2020–2025

    64.9 °F

  • Average 2020–2025

    72.5 °F

  • Average High 2020–2025

    81 °F
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