San Antonio 7-day weather forecast

Written by:
March 9, 2026
ESOlex // Shutterstock

San Antonio 7-day weather forecast

Stacker created the forecast for San Antonio, Texas using data from OpenWeather. This week's high is 90 °F on Sunday, while the low is 39 °F on Tuesday. There are expected to be 5 sunny days and precipitation on 0 days this week.

NWS Austin/San Antonio TX has issued a red flag warning until Tuesday at 08:00 PM and a wind advisory until Monday at 05:00 AM.

Monday, March 16

- High of 57 °F, low of 42 °F (15% humidity)
- Mostly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Strong breeze (26 mph wind)
- Sunrise at 7:42 AM, sunset at 7:42 PM
You may also like: Highest-rated chicken wings in San Antonio by diners
1 / 6
Nazarova Mariia // Shutterstock

Tuesday, March 17

- High of 66 °F, low of 39 °F (17% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Moderate breeze (15 mph wind)
- Sunrise at 7:41 AM, sunset at 7:43 PM
2 / 6
afoto6267 // Shutterstock

Wednesday, March 18

- High of 78 °F, low of 47 °F (44% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (8 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 7:40 AM, sunset at 7:43 PM
- New moon
3 / 6
Pablesku // Shutterstock

Thursday, March 19

- High of 80 °F, low of 55 °F (49% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (8 UV index)
- Light breeze (7 mph wind)
- Sunrise at 7:38 AM, sunset at 7:44 PM
4 / 6
New Africa // Shutterstock

Friday, March 20

- High of 84 °F, low of 57 °F (47% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Gentle breeze (10 mph wind)
- Sunrise at 7:37 AM, sunset at 7:45 PM
5 / 6
liseykina // Shutterstock

Saturday, March 21

- High of 88 °F, low of 58 °F (37% humidity)
- Sunny with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 7:36 AM, sunset at 7:45 PM
You may also like: Closest national parks to San Antonio
6 / 6
IKO-studio // Shutterstock

Sunday, March 22

- High of 90 °F, low of 61 °F (39% humidity)
- Partly cloudy with a 0% chance of rain
- Very high risk of harm from sun exposure (9 UV index)
- Moderate breeze (15 mph wind)
- Sunrise at 7:35 AM, sunset at 7:46 PM

Trending Now