| NWS Forecast for: St. John The Baptist Parish Issued by: National Weather Service New Orleans/Baton Rouge, LA Last Update: 535 AM CDT Sat Aug 15 2026 |  |
Today: Sunny. Highs in the upper 90s. Northwest winds around 5 mph, becoming southeast this afternoon. Heat index values up to 113. Tonight: Mostly clear. Humid with lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 110 early in the evening. Sunday: Sunny with highs in the upper 90s. Northwest winds around 5 mph, becoming east in the afternoon. Heat index values up to 115. Sunday Night: Partly cloudy in the evening, then becoming mostly clear. Humid with lows in the upper 70s. Southwest winds around 5 mph. Heat index values up to 108 early in the evening. Monday: Sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 90s. West winds around 5 mph. Chance of rain 20 percent. Heat index values up to 116. Monday Night: Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. Tuesday And Tuesday Night: Partly cloudy. Highs in the upper 90s. Lows in the upper 70s. Heat index values up to 115. Wednesday: Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 110. Wednesday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. Thursday: Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 110. Thursday Night: Partly cloudy. Lows in the upper 70s. Heat index values up to 105 early in the evening. Friday: Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 110. | |
| Zone Forecast: St. John The Baptist Parish | |
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