Saint Johns River - Sisters Creek Entrance Weather Forecast
- 80
- 95
Slight Chance Thunderstorms
- 78
- 99
Thunderstorms Likely
- 77
- 93
Thunderstorms Likely
- 77
- 93
Chance Thunderstorms
- 76
- 92
Thunderstorms Likely
- 76
- 90
Thunderstorms Likely
Today 28 Jul Coastal Duval
Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 90s. West Winds around 5 Mph, becoming southwest 10 to 15 Mph with Gusts up to 25 Mph this afternoon. Chance of rain 20 percent. Heat index Values up to 111.
Tonight 28 Jul Coastal Duval
Partly cloudy. Lows in the upper 70s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Heat index Values up to 105 early in the evening.
Saint Johns River - Sisters Creek Entrance Temperature Statistics
July Temperature
Mayport Naval Station - Adm David L. McDonald Field (1.9 miles)
Lowest 14 July, 2026
73.9 °FAverage July
83.4 °FHighest 7 July, 2026
95 °F
Climate (2021–2026)
Mayport Naval Station - Adm David L. McDonald Field (1.9 miles)
Average Low 2021–2026
65.6 °FAverage 2021–2026
72.7 °FAverage High 2021–2026
80.1 °F