Zapata County Climate
Zapata County, Texas
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
74.4°F
Annual Precip
20.4"
Annual Snowfall
0.1"
Extreme Heat Days
172
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9b
Minimum winter temperature range for plant survival
9,011
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Zapata County
Climate Verdict
Zapata County has a hot, with an average annual temperature of 74.4°F, semi-arid conditions with only 20.4 inches of annual precipitation, extreme heat exposure with 171.8 days per year above 90°F, light snow averaging 0.1 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are exceptionally mild, with January averaging 57.4°F. summers are hot, with July averaging 87.4°F. The 30°F seasonal variation provides noticeable but manageable change. January is typically the coldest month and August the warmest.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Zapata County is 8.9°F warmer than the Texas statewide average of 65.5°F, it is also noticeably drier, receiving 11.5 inches less precipitation than the state average, the county experiences 66.9581266173242 more extreme heat days than the state average.
Climate Profile
About Zapata County Weather
Extreme southern heat and sun
Zapata County is one of the warmest places in the U.S., with a 74.4°F annual average temperature. This semi-arid climate receives only 20.4 inches of rain, making it both hot and dry.
Far exceeding the Texas average
At nearly 75°F, Zapata is roughly nine degrees warmer than the Texas state average. It faces a staggering 172 days of extreme heat each year, nearly double the count of northern counties.
The heart of the Rio Grande
Zapata is much hotter and drier than the state average of 65.5°F and 31.9 inches of rain. Its climate closely mirrors the intense heat found in neighboring Webb and Starr counties.
Endless summer and mild winters
Summer lasts most of the year, with a July average of 87.4°F and virtually no snow. Even in January, the average temperature remains a balmy 57.4°F.
Prioritize extreme heat safety
Residents must plan for 172 days of temperatures over 90°F with high-efficiency cooling and hydration. Protective sun gear and tinted windows are essential for the intense South Texas sun.
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.