Saint Johns River Mouth Weather Forecast
- 71
- 80
Chance Rain Showers
- 72
- 82
Mostly Sunny
- 73
- 87
Mostly Sunny
- 75
- 87
Partly Sunny
- 75
- 89
Partly Sunny
- 76
- 87
Partly Sunny
- 77
- 88
Mostly Sunny
Today 13 May Coastal Duval
Mostly sunny with a slight chance of Showers and Thunderstorms. Highs in the mid 80s. Southwest Winds around 10 Mph. Chance of rain 20 percent.
Tonight 13 May Coastal Duval
Partly cloudy early this Evening, then becoming mostly clear. A slight chance of Showers early this evening. Lows in the upper 60s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.
Saint Johns River Mouth Temperature Statistics
May Temperature
Mayport Naval Station - Adm David L. McDonald Field (1.9 miles)
Lowest 1 May, 2025
65.6 °FAverage May
80.6 °FHighest 5 May, 2025
92.6 °F
Climate (2020–Present)
Mayport Naval Station - Adm David L. McDonald Field (1.9 miles)
Average Low 2020–2025
65.6 °FAverage 2020–2025
72.5 °FAverage High 2020–2025
79.9 °F