Tue Jan 7 04:28:28 PM EST 2025 Coastal Jefferson Parish- Including the city of Grand Isle 328 PM CST Tue Jan 7 2025 .TONIGHT...Mostly cloudy. Lows in the mid 30s. North winds 10 to 15 mph. .WEDNESDAY...Mostly sunny. Highs around 50. North winds 10 to 15 mph. .WEDNESDAY NIGHT...Mostly clear. Areas of frost after midnight. Lows in the mid 30s. North winds 10 to 15 mph. .THURSDAY...Sunny in the morning, then becoming partly sunny. Highs in the mid 50s. Northeast winds 10 to 15 mph. .THURSDAY NIGHT...Cloudy. A chance of showers in the evening, then showers likely after midnight. Not as cool with lows in the upper 40s. Temperature rising into the upper 50s after midnight. East winds 15 to 20 mph. Chance of rain 70 percent. .FRIDAY...Showers. Locally heavy rainfall possible in the morning. Highs in the mid 60s. Temperature falling into the mid 50s in the afternoon. Chance of rain near 100 percent. .FRIDAY NIGHT...Cloudy. A slight chance of showers in the evening. Lows in the upper 30s. Chance of rain 20 percent. .SATURDAY...Mostly cloudy in the morning, then becoming mostly sunny. Much cooler with highs in the upper 40s. .SATURDAY NIGHT...Mostly clear. Lows in the upper 30s. .SUNDAY...Sunny. A slight chance of showers in the afternoon. Highs in the upper 50s. Chance of rain 20 percent. .SUNDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A 20 percent chance of showers. Near steady temperature in the upper 40s. .MONDAY THROUGH TUESDAY...Mostly cloudy with a 20 percent chance of showers. Highs in the upper 50s. Lows in the mid 40s.