Weather WorldLake Formosa, LA 7-Day Night Weather Forecast
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Lake Formosa, LA Weather Forecast
Lake Formosa, LA Weather Forecast Date: 616 AM CDT Sat Aug 01 2026
The area/counties/county of: Tensas, including the cities of: Newellton, St. Joseph, and Waterproof.or toggle through each period.
Today... Sunny. A slight chance of showers and thunderstorms this morning. Highs in the mid 90s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 20%. Heat index values up to 106.
Tonight... Mostly clear. A slight chance of showers in the evening. Lows in the lower 70s. West winds 5 to 10 mph, becoming northwest after midnight. Chance of rain 20%.
Sunday... Sunny. Highs in the lower 90s. Northwest winds 5 to 10 mph.
Sunday Night... Mostly clear. Lows in the lower 70s. North winds around 5 mph in the evening, becoming light and variable.
Monday... Sunny. Highs in the mid 90s. North winds around 5 mph.
Monday Night... Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105.
Tuesday... Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105.
Wednesday... Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105.
Thursday... Mostly clear. Lows in the mid 70s. Highs in the mid 90s. Heat index values up to 105.
POP = Probability of Precipitation
Lake Formosa Radar Loop
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