Weather WorldThe Lagoon, TX 7-Day Night Weather Forecast
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The Lagoon, TX Weather Forecast
The Lagoon, TX Weather Forecast Date: 253 PM CDT Mon Aug 17 2026
The area/counties/county of: Galveston Island, including the city of Galveston.or toggle through each period.
Tonight... Mostly clear. Lows in the lower 80s. South winds 10 to 15 mph.
Tuesday... Mostly sunny. Humid with highs around 90. West winds 5 to 10 mph, becoming south 10 to 15 mph in the afternoon. Heat index values up to 105.
Tuesday Night... Partly cloudy in the evening, then clearing. Humid with lows in the lower 80s. Southwest winds 10 to 15 mph.
Wednesday... Mostly sunny. Humid with highs around 90. Southwest winds 10 to 15 mph.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the lower 80s. South winds 10 to 15 mph.
Thursday... Sunny. Highs in the lower 90s. Heat index values up to 105.
Thursday Night... Mostly clear. Lows in the mid 80s. Heat index values up to 105 early.
Friday... Sunny. Highs around 90. Heat index values up to 105.
Friday Night... Mostly clear. Lows in the lower 80s. Heat index values up to 105 early.
Saturday... Sunny. Highs in the lower 90s. Heat index values up to 105.
Saturday Night... Mostly clear. Lows in the lower 80s. Heat index values up to 105 early.
Sunday... Sunny. Highs around 90. Heat index values up to 105.
Sunday Night... Mostly clear. Lows in the mid 80s.
POP = Probability of Precipitation
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