


NWS Forecast for: Galveston Island Issued by: National Weather Service Houston, TX Last Update: 529 PM CDT Sat Jul 12 2025 | ![]() |
Tonight: Partly cloudy. A slight chance of showers and thunderstorms after midnight. Near steady temperature in the mid 80s. South winds 10 to 15 mph. Chance of rain 20 percent. Sunday: Mostly sunny with a chance of showers and thunderstorms. Humid with highs in the upper 80s. South winds 10 to 15 mph. Chance of rain 40 percent. Heat index values up to 105. Sunday Night: Mostly clear in the evening, then becoming partly cloudy. Humid. Near steady temperature in the mid 80s. South winds 10 to 15 mph. Monday: Mostly sunny with a chance of showers and thunderstorms. Humid with highs in the upper 80s. South winds 5 to 10 mph. Chance of rain 40 percent. Monday Night: Partly cloudy in the evening, then becoming mostly clear. Humid with lows in the lower 80s. South winds 5 to 10 mph. Tuesday: Sunny. Highs in the upper 80s. Tuesday Night: Mostly clear. Lows in the lower 80s. Wednesday: Sunny. Highs around 90. Wednesday Night: Mostly clear. Lows in the lower 80s. Thursday: Sunny. Highs in the lower 90s. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 80s. Friday: Mostly sunny with a chance of showers and thunderstorms. Highs around 90. Chance of rain 40 percent. Friday Night: Partly cloudy. Lows in the lower 80s. Saturday: Mostly sunny with a chance of showers and thunderstorms. Highs around 90. Chance of rain 30 percent. Heat index values up to 105. | |
Zone Forecast: Galveston Island | |
Visit your local NWS office at: https://www.weather.gov/hgx |