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Jefferson Parish, LA Weather Forecast
Jefferson Parish, LA Weather Forecast Date: 1216 AM CDT Thu Oct 01 2026
The area/counties/county of: Coastal Jefferson, including the city of Grand Isle.or toggle through each period.
Rest of Tonight... Mostly clear with a 20% chance of showers. Near steady temperature in the upper 70s. Southeast winds 10 to 15 mph.
Thursday... Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Humid with highs in the upper 80s. Southeast winds 10 to 15 mph. Chance of rain 50%.
Thursday Night... Mostly clear. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Humid with lows in the mid 70s. Southeast winds 5 to 10 mph. Chance of rain 30%.
Friday... Mostly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Humid with highs in the upper 80s. East winds 5 to 10 mph. Chance of rain 60%.
Friday Night... A chance of thunderstorms. Showers with lows in the mid 70s. East winds around 5 mph. Chance of rain 80%.
Saturday... Showers. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. Highs in the mid 80s. Chance of rain 90%.
Saturday Night... Showers with a chance of thunderstorms. Lows in the mid 70s. Highs in the mid 80s. Chance of rain 90%.
Sunday... Showers with a chance of thunderstorms. Lows in the mid 70s. Highs in the mid 80s. Chance of rain 90%.
Sunday Night... Showers likely with a chance of thunderstorms. Lows in the lower 70s. Highs in the lower 80s. Chance of rain 70%.
Monday... Showers likely with a chance of thunderstorms. Lows in the lower 70s. Highs in the lower 80s. Chance of rain 70%.
Monday Night... Mostly cloudy with a slight chance of thunderstorms. A chance of showers. Lows in the lower 70s. Chance of rain 50%.
Tuesday... Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50%.
Tuesday Night... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 70s. Chance of rain 50%.
POP = Probability of Precipitation
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