Month Average High (°F) Average Low (°F) Average High (°C) Average Low (°C) January 66 43 19 6 February 68 45 20 7. Understanding the average temperatures here helps residents and visitors plan activities, choose appropriate clothing, and manage energy use throughout the year.
San Antonio TX Average Temperatures By Month
San Antonio, Texas, experiences a humid subtropical climate that shapes daily life and seasonal rhythms across the region. Overnight lows move from the 40s°F (4–6°C) early in the year to the 60s°F (15–20°C) by late spring.
This transition period is generally regarded as the most comfortable window for outdoor activity. Monthly Temperature Averages The following table summarizes typical high and low temperatures, along with average conditions for each month.
San Antonio TX Average Temperatures By Month
Year-Round Temperature Patterns The city sits in south-central Texas, where prevailing winds from the Gulf of Mexico interact with continental air masses. Heat indices can push perceived temperatures into the triple digits, especially when humidity from the Gulf combines with stagnant high-pressure systems.
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