Grand Isle State Park Weather Forecast
- 68
- 76
Rain Showers
- 67
- 76
Chance Thunderstorms
- 69
- 74
Chance Thunderstorms
- 71
- 76
Chance Rain Showers
- 74
- 79
Mostly Sunny
- 75
- 79
Mostly Sunny
Today 9 May Coastal Jefferson
Showers. A chance of Thunderstorms this Morning, then Thunderstorms likely this afternoon. Near steady temperature in the mid 70s. Northeast Winds 5 to 10 Mph. Chance of rain 90 percent.
Tonight 9 May Coastal Jefferson
Mostly cloudy. Showers and Thunderstorms Likely, mainly in the evening. Lows in the mid 60s. Northeast Winds 10 to 15 Mph. Chance of rain 70 percent.
Grand Isle State Park Temperature Statistics
May Temperature
Port Fourchon (17.4 miles)
Lowest
–Average May
–Highest
–
Climate (2020–Present)
Port Fourchon (17.4 miles)
Average Low 2020–2020
78.7 °FAverage 2020–2020
82.3 °FAverage High 2020–2020
85.7 °F