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Lake Martin, LA Weather Forecast
Lake Martin, LA Weather Forecast Date: 121 AM CDT Tue Aug 11 2026
The area/counties/county of: Eastern Ascension, including the cities of: Gonzales, Prairieville, Geismar, and Donaldsonville.or toggle through each period.
Rest of Tonight... Mostly clear. Near steady temperature in the upper 70s. Light and variable winds.
Tuesday... Sunny. A slight chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. Light and variable winds, becoming south around 5 mph in the afternoon. Chance of rain 20%. Heat index values up to 112.
Tuesday Night... Partly cloudy in the evening, then clearing. Humid with lows in the mid 70s. South winds around 5 mph in the evening, becoming light and variable. Heat index values up to 105 early in the evening.
Wednesday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 90s. Light and variable winds, becoming southwest around 5 mph in the afternoon. Chance of rain 40%. Heat index values up to 114.
Wednesday Night... Partly cloudy in the evening, then clearing. Humid with lows in the mid 70s. Southwest winds around 5 mph in the evening, becoming light and variable. Heat index values up to 106 early in the evening.
Thursday... Mostly clear. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 110.
Friday... Mostly clear. Highs in the upper 90s. Lows in the mid 70s. Heat index values up to 110.
Saturday... Sunny. Highs in the upper 90s. Heat index values up to 110.
Saturday Night... Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.
Sunday... Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.
Sunday Night... Partly cloudy in the evening, then clearing. Lows in the upper 70s. Heat index values up to 110 early in the evening.
POP = Probability of Precipitation
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