| NWS Forecast for: St. James Parish Issued by: National Weather Service New Orleans/Baton Rouge, LA Last Update: 121 PM CDT Tue Jul 21 2026 | |
This Afternoon: Showers and thunderstorms likely. Near steady temperature in the lower 90s. Temperature falling into the lower 90s late. Northwest winds around 5 mph. Chance of rain 60 percent. Heat index values up to 117. Tonight: Partly cloudy with showers and thunderstorms likely in the evening, then mostly clear after midnight. Humid with lows in the upper 70s. Northwest winds around 5 mph. Chance of rain 70 percent. Heat index values up to 111 early in the evening. Wednesday: Sunny in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 90s. North winds 5 to 10 mph. Chance of rain 20 percent. Heat index values up to 119. Wednesday Night: Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Humid with lows in the upper 70s. North winds around 5 mph, becoming northeast 10 to 15 mph with gusts up to 35 mph after midnight. Chance of rain 50 percent. Heat index values up to 114 early in the evening. Thursday: Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. Breezy with highs in the lower 90s. East winds 20 to 25 mph with gusts up to 45 mph, becoming south 15 to 25 mph with gusts up to 30 mph in the afternoon. Chance of rain 60 percent. Heat index values up to 110. Thursday Night: A slight chance of thunderstorms in the evening. Partly cloudy with a slight chance of showers. Lows in the upper 70s. Chance of rain 20 percent. Heat index values up to 105 early in the evening. Friday: Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 50 percent. Heat index values up to 105. Friday Night: Partly cloudy. Lows in the mid 70s. Saturday: Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30 percent. Heat index values up to 110. Saturday Night: Partly cloudy. Lows in the mid 70s. Heat index values up to 105 early in the evening. Sunday: Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 110. Sunday Night: Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. Monday: Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 110. | |
| Zone Forecast: St. James Parish | |
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