Grand Isle (Outside) Weather Forecast
- 72
- 80
Rain Showers Likely
- 70
- 79
Rain Showers
- 71
- 78
Slight Chance Rain Showers
- 74
- 78
Partly Sunny
- 75
- 80
Mostly Cloudy
- 75
- 80
Chance Rain Showers
Today 2 May Coastal Jefferson
Mostly sunny. Highs in the lower 80s. Southeast Winds 10 to 15 Mph.
Tonight 2 May Coastal Jefferson
Mostly cloudy with a chance of Thunderstorms. Showers Likely, mainly in the evening. Lows around 70. South Winds 10 to 15 Mph. Chance of rain 60 percent.
Grand Isle (Outside) Temperature Statistics
May Temperature
Port Fourchon (18 miles)
Lowest
–Average May
–Highest
–
Climate (2020–Present)
Port Fourchon (18 miles)
Average Low 2020–2020
78.3 °FAverage 2020–2020
81.9 °FAverage High 2020–2020
85.4 °F