San Antonio Weather Update: Saturday, February 21, 2026
If you’re in San Antonio, Texas, or planning a visit today, Saturday, February 21, 2026, here’s a detailed look at the weather forecast. Expect mostly sunny conditions with a significant temperature swing between day and night.
Current Conditions and Forecast
Throughout the day, San Antonio will experience minimal cloud cover, with approximately 12% cloud cover expected. The high temperature will reach around 77°F (25°C) mid-day, dropping to a low of 43°F (6°C) late in the evening. A north wind will be present, blowing at approximately 13.67 mph.
Sunrise will occur at 7:08 AM, and sunset will be at 6:28 PM, providing approximately 11 hours of daylight.
Precipitation Outlook
The chance of precipitation in San Antonio today is remarkably low, at just 3%. AccuWeather data indicates that the rainy season in San Antonio typically runs from May to October, with September being the wettest month.
Tomorrow’s Forecast
The weather forecast for Sunday, February 22, 2026, predicts continued partly cloudy skies. Temperatures will range from a low of 43°F (6°C) to a high of 68°F (20°C).
San Antonio Climate Overview
San Antonio is known for its warm climate, with summer temperatures frequently exceeding 90°F. The city has a humid subtropical climate, characterized by mild winters and hot summers. The average annual temperature in San Antonio is 70°F.
During the summer months, temperatures can soar to 100°F or higher, making it crucial to stay hydrated and avoid prolonged outdoor exposure during peak heat. Winters are generally mild, with average temperatures around 50°F.
Events in San Antonio Today
Today, February 21, 2026, the San Antonio Stock Show & Rodeo is taking place, featuring musical performances. MSN reports that a musical lineup will be performing throughout the event. San Antonio Events lists a variety of concerts, shows, and sports events happening throughout February 2026.
For a broader range of events, including foodie festivals and Mardi Gras celebrations, check out Visit San Antonio’s guide to February events.