O'Neil Weather Forecast
- 71
- 87
Partly Sunny
- 75
- 84
Mostly Sunny
- 75
- 81
Chance Thunderstorms
- 76
- 80
Chance Thunderstorms
- 75
- 81
Chance Thunderstorms
- 75
- 83
Chance Thunderstorms
Today 18 Sep Coastal Nassau
Mostly sunny. Highs in the upper 80s. East Winds 5 to 10 Mph.
Tonight 18 Sep Coastal Nassau
Partly cloudy in the Evening, then clearing. Lows around 70. East Winds 5 to 10 Mph.
O'Neil Temperature Statistics
September Temperature
Fernandina Beach Municipal Airport (3.1 miles)
Lowest 15 September, 2025
66.2 °FAverage September
77.2 °FHighest 6 September, 2025
87.8 °F
Climate (2020–Present)
Fernandina Beach Municipal Airport (3.1 miles)
Average Low 2020–2025
62.2 °FAverage 2020–2025
69.6 °FAverage High 2020–2025
77.7 °F