Fri Feb 21 10:40:22 PM EST 2025 Coastal Jefferson Parish- Including the city of Grand Isle 939 PM CST Fri Feb 21 2025 .OVERNIGHT...Mostly cloudy. Near steady temperature in the mid 40s. Northeast winds 5 to 10 mph. .SATURDAY...Partly sunny. Not as cool with highs in the upper 50s. Northeast winds 5 to 10 mph. .SATURDAY NIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the upper 40s. Northeast winds 5 to 10 mph. Chance of rain 40 percent. .SUNDAY...Showers likely in the morning, then showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent. .SUNDAY NIGHT...Mostly cloudy. Showers likely with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Near steady temperature in the mid 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent. .MONDAY...Partly sunny. Highs in the mid 60s. .MONDAY NIGHT THROUGH WEDNESDAY...Mostly clear. Lows in the lower 50s. Highs around 70. .WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the upper 60s. .THURSDAY NIGHT AND FRIDAY...Mostly clear. Lows in the upper 40s. Highs in the mid 60s.