Lower St. Bernard- Including the cities of Yscloskey, Delacroix, and Shell Beach 1232 PM CDT Sun Jul 20 2025 .THIS AFTERNOON...Mostly sunny with a slight chance of showers and thunderstorms. Near steady temperature in the upper 80s. Southeast winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 105. .TONIGHT...Mostly clear. Humid with lows around 80. Southwest winds 5 to 10 mph. .MONDAY...Mostly sunny. Humid with highs in the lower 90s. West winds around 5 mph, becoming southwest in the afternoon. Heat index values up to 105. .MONDAY NIGHT...Mostly clear. Humid with lows around 80. Southwest winds 5 to 10 mph. .TUESDAY...Sunny with a slight chance of showers and thunderstorms. Humid with highs in the lower 90s. Northwest winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 106. .TUESDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the lower 80s. Chance of rain 20 percent. .WEDNESDAY...Mostly sunny with a chance of showers and thunderstorms in the morning, then mostly cloudy with showers and thunderstorms likely in the afternoon. Highs in the lower 90s. Chance of rain 60 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Showers and thunderstorms likely in the evening, then showers with a chance of thunderstorms after midnight. Lows in the upper 70s. Chance of rain 80 percent. .THURSDAY...Showers and thunderstorms. Highs in the upper 80s. Chance of rain 90 percent. .THURSDAY NIGHT...A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Near steady temperature in the lower 80s. Chance of rain 70 percent. .FRIDAY...Showers. A chance of thunderstorms in the morning, then thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 90 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Near steady temperature in the lower 80s. Chance of rain 50 percent. .SATURDAY...Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. Highs in the upper 80s. Chance of rain 70 percent.