Saint Johns River - Great Marsh Island Weather Forecast
- 76
- 89
Chance Thunderstorms
- 76
- 90
Thunderstorms Likely
- 76
- 88
Thunderstorms Likely
- 76
- 89
Chance Thunderstorms
- 76
- 90
Chance Thunderstorms
- 77
- 92
Thunderstorms Likely
- 77
- 92
Thunderstorms Likely
Today 26 Jul Coastal Duval
Showers and Thunderstorms likely. Highs in the upper 80s. Temperature falling into the mid 80s late. Southeast Winds 5 to 10 Mph. Chance of rain 70 percent.
Tonight 26 Jul Coastal Duval
Mostly cloudy. Showers and Thunderstorms likely this Evening, then a slight chance of Showers after midnight. Lows in the mid 70s. South Winds 5 to 10 Mph. Chance of rain 70 percent.
Saint Johns River - Great Marsh Island Temperature Statistics
July Temperature
Mayport Naval Station - Adm David L. McDonald Field (2.5 miles)
Lowest 21 July, 2024
76.6 °FAverage July
87.3 °FHighest 13 July, 2024
98.7 °F
Climate (2019–Present)
Mayport Naval Station - Adm David L. McDonald Field (2.5 miles)
Average Low 2019–2024
65.3 °FAverage 2019–2024
72 °FAverage High 2019–2024
79.3 °F