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Lacombe, LA Weather Forecast
Lacombe, LA Weather Forecast Date: 535 PM CDT Sun Sep 20 2026
The area/counties/county of: Southwestern St. Tammany, including the cities of: Mandeville and Madisonville.or toggle through each period.
Tonight... Mostly clear. Lows in the mid 70s. South winds around 5 mph, becoming west after midnight.
Monday... Sunny in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. Northwest winds around 5 mph. Chance of rain 50%. Heat index values up to 107.
Monday Night... Mostly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Humid with lows in the mid 70s. East winds around 5 mph in the evening, becoming light and variable. Chance of rain 30%.
Tuesday... Sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. Northeast winds around 5 mph, becoming east around 5 mph in the afternoon. Chance of rain 20%. Heat index values up to 108.
Tuesday Night... Mostly clear. Humid with lows in the lower 70s. Southeast winds around 5 mph, becoming north after midnight.
Wednesday... Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 110.
Thursday... Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 110.
Thursday Night... Partly cloudy. Lows around 70. Highs in the upper 80s.
Friday... Partly cloudy. Lows around 70. Highs in the upper 80s.
Saturday... Partly cloudy. Lows around 70. Highs in the upper 80s.
POP = Probability of Precipitation
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