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The Pen, LA Weather Forecast
The Pen, LA Weather Forecast Date: 535 AM CDT Wed Aug 12 2026
The area/counties/county of: Coastal Jefferson, including the city of Grand Isle.or toggle through each period.
Today... Mostly sunny with a chance of showers and thunderstorms. Highs around 90. Southwest winds 5 to 10 mph. Chance of rain 50%.
Tonight... Mostly clear. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph.
Thursday... Sunny with highs in the lower 90s. Southwest winds 5 to 10 mph.
Thursday Night... Mostly clear. Humid with lows in the upper 70s. Southwest winds 5 to 10 mph.
Friday... Sunny with highs in the lower 90s. West winds around 5 mph, becoming south in the afternoon. Heat index values up to 106.
Friday Night... Mostly clear. Lows in the upper 70s. Highs in the mid 90s. Heat index values up to 110.
Saturday... Mostly clear. Lows in the upper 70s. Highs in the mid 90s. Heat index values up to 110.
Sunday... Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20%. Heat index values up to 110.
Sunday Night... Mostly clear. Lows in the upper 70s. Highs in the lower 90s. Heat index values up to 110.
Monday... Mostly clear. Lows in the upper 70s. Highs in the lower 90s. Heat index values up to 110.
POP = Probability of Precipitation
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