Riverside (St Johns River) Weather Forecast

    • 74
    • 87

    Chance Thunderstorms

    • 74
    • 89

    Rain Showers Likely

    • 75
    • 90

    Rain Showers Likely

    • 74
    • 89

    Rain Showers Likely

    • 72
    • 87

    Chance Thunderstorms

    • 71
    • 85

    Slight Chance Thunderstorms

Today 20 Sep South Central Duval

Partly sunny late this Morning, then becoming mostly cloudy. A chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. Northeast Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 20 Sep South Central Duval

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the mid 70s. East Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming southwest after midnight. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Riverside (St Johns River) Temperature Statistics

September Temperature

Jacksonville Naval Air Station (5 miles)

  • Lowest 6 September, 2026

    73.9 °F

  • Average September

    81.7 °F

  • Highest 14 September, 2026

    93 °F

Climate (2021–2026)

Jacksonville Naval Air Station (5 miles)

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  • Average Low 2021–2026

    65 °F

  • Average 2021–2026

    72.7 °F

  • Average High 2021–2026

    81.3 °F
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