Galveston County Climate
Galveston County, Texas
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
71.4°F
Annual Precip
53.7"
Annual Snowfall
0.2"
Extreme Heat Days
66
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9b
Minimum winter temperature range for plant survival
7,931
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Galveston County
Climate Verdict
Galveston County has a warm, averaging 71.4°F year-round, moderately wet with 53.7 inches of annual precipitation, significant summer heat with 65.93333333333334 days annually above 90°F, light snow averaging 0.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are exceptionally mild, with January averaging 55.4°F. summers are hot, with July averaging 84.8°F. The climate is remarkably stable year-round, with only a 29°F difference between January and July. January is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Galveston County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Galveston County is 6.0°F warmer than the Texas statewide average of 65.5°F, it is also noticeably wetter, receiving 21.8 inches more precipitation than the state average, the county experiences 38.90854004934248 fewer extreme heat days than the state average.
Climate Profile
About Galveston County Weather
Coastal warmth in a humid subtropical zone
Galveston County maintains an average annual temperature of 71.4°F, significantly warmer than the national median. This maritime climate stays much milder than the interior U.S., rarely seeing the sharp freezes typical of northern latitudes.
Warmer and wetter than the Texas average
The county's 71.4°F annual average sits nearly six degrees above the Texas state average of 65.5°F. It also receives 53.7 inches of rain annually, far outpacing the state average of 31.9 inches.
A maritime outlier in the Gulf region
Galveston stays warmer in winter than inland neighbors like Harris County, thanks to the Gulf of Mexico's insulating effect. Its 55.4°F January average provides a gentler winter than most counties in the upper Texas coast.
Mild winters and humid, steady summers
Summer temperatures average 84.2°F with 66 days of heat reaching 90°F or higher. Snow is almost non-existent at just 0.2 inches annually, while winter temperatures stay comfortable with a 57.3°F average.
Prepare for high humidity and tropical rain
Residents should invest in high-efficiency dehumidifiers and robust HVAC systems to manage the intense coastal moisture. With over 53 inches of annual rain, flood preparation and reliable rain gear are essential year-round.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.