Year-Round Temperature Patterns The city sits in south-central Texas, where prevailing winds from the Gulf of Mexico interact with continental air masses. San Antonio, Texas, experiences a humid subtropical climate that shapes daily life and seasonal rhythms across the region.
How Humidity Shapes San Antonio TX Average Temperatures Year-Round
Month Average High (°F) Average Low (°F) Average High (°C) Average Low (°C) January 66 43 19 6 February 68 45 20 7. Monthly averages reveal a pronounced midsummer peak and a mild winter season, with noticeable swings between night and day during transitional periods.
Fall (September–November) September remains warm, often hovering near 90°F (32°C), but October and November deliver a noticeable cooling trend. Snow is infrequent, but icy conditions can disrupt daily life when they do occur.
How Humidity Shapes San Antonio TX Average Temperatures Year-Round
These values are based on long-term climate records and serve as a reliable reference for planning purposes. Overnight lows move from the 40s°F (4–6°C) early in the year to the 60s°F (15–20°C) by late spring.
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