Southside Weather Forecast

    • 72
    • 86

    Partly Sunny

    • 72
    • 87

    Mostly Sunny

    • 73
    • 86

    Slight Chance Thunderstorms

    • 74
    • 85

    Chance Thunderstorms

    • 73
    • 85

    Chance Thunderstorms

    • 73
    • 88

    Chance Thunderstorms

Today 18 Sep Coastal Duval

Mostly sunny. Highs in the upper 80s. East Winds 10 to 15 Mph.

Tonight 18 Sep Coastal Duval

Partly cloudy this Evening, then clearing. Lows around 70. East Winds 10 to 15 Mph, becoming north northwest and Diminishing to around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Southside Temperature Statistics

September Temperature

Jacksonville Naval Air Station (5.6 miles)

  • Lowest 15 September, 2025

    69.1 °F

  • Average September

    78.1 °F

  • Highest 5 September, 2025

    90 °F

Climate (2020–Present)

Jacksonville Naval Air Station (5.6 miles)

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  • Average Low 2020–2025

    65.1 °F

  • Average 2020–2025

    72.6 °F

  • Average High 2020–2025

    81 °F
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