| NWS Forecast for: Galveston Island Issued by: National Weather Service Houston, TX Last Update: 1037 PM CDT Fri Aug 14 2026 |  |
| Overnight: Mostly clear. Near steady temperature in the mid 80s. South winds 10 to 15 mph. Saturday: Sunny with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 108. Saturday Night: Mostly clear. Humid with lows in the lower 80s. South winds 10 to 15 mph. Sunday: Sunny with highs in the lower 90s. West winds around 5 mph, becoming southeast in the afternoon. Heat index values up to 106. Sunday Night: Mostly clear. Humid with lows in the lower 80s. South winds 5 to 10 mph. Monday: Sunny. Highs in the lower 90s. Heat index values up to 105. Monday Night: Mostly clear. Lows in the lower 80s. Tuesday: Sunny. Highs in the lower 90s. Heat index values up to 105. Tuesday Night: Mostly clear. Lows in the lower 80s. Wednesday: Sunny. Highs around 90. Heat index values up to 105. Wednesday Night: Mostly clear. Lows in the lower 80s. Thursday: Sunny. Highs around 90. Heat index values up to 105. Thursday Night: Mostly clear. Lows in the lower 80s. Friday: Sunny. Highs around 90. Heat index values up to 105. | |
| Zone Forecast: Galveston Island | |
Visit your local NWS office at: https://www.weather.gov/hgx |