| NWS Forecast for: Northern St. Tammany Issued by: National Weather Service New Orleans/Baton Rouge, LA Last Update: 1051 PM CDT Tue Jul 21 2026 |  |
Overnight: Mostly clear. Lows in the upper 70s. North winds around 5 mph with gusts up to 25 mph. Wednesday: Sunny in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 90s. Northeast winds 10 to 15 mph with gusts up to 35 mph. Chance of rain 50 percent. Heat index values up to 115. Wednesday Night: A chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Humid with lows in the upper 70s. East winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 50 percent. Heat index values up to 113 early in the evening. 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 lower 90s. Southeast winds 5 to 10 mph with gusts up to 25 mph. Chance of rain 50 percent. Heat index values up to 110. Thursday Night: Partly cloudy. A chance of showers and thunderstorms in the evening. Humid with lows in the mid 70s. South winds around 5 mph with gusts up to 20 mph in the evening, becoming light and variable. Chance of rain 50 percent. Heat index values up to 105 early in the evening. Friday: 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 40 percent. Heat index values up to 105. Friday Night: Partly cloudy. Lows in the mid 70s. Saturday: Mostly sunny. Highs in the lower 90s. Heat index values up to 105. Saturday Night: Partly cloudy. Lows in the mid 70s. Sunday: Sunny. Highs in the mid 90s. Heat index values up to 105. Sunday Night: Mostly clear. Lows in the mid 70s. Heat index values up to 105 early in the evening. Monday: Sunny. Highs in the mid 90s. Heat index values up to 110. Monday Night: Mostly clear. Lows in the upper 70s. Heat index values up to 110 early in the evening. Tuesday: Sunny. Highs in the upper 90s. Heat index values up to 110. | |
| Zone Forecast: Northern St. Tammany | |
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