San Antonio weather live forecast

Today's maximum temperature in San Antonio is expected to be 36°C. Select a day from the live weather forecast for San Antonio, Texas, USA for more weather parameters.

Sunday
6th Sep
36

26

6

9
Monday
7th Sep
37

25

8

9
Tuesday
8th Sep
38

25

7

10
Wednesday
9th Sep
37

24

7

9
Thursday
10th Sep
37

24

10

10

5-day weather forecast updated at 04:00 on Sunday 6th September 2026 GMT

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The 5-day weather forecast for Texas (San Antonio) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

San Antonio weather forecast by day

Below are the detailed weather forecasts for San Antonio for the next 5 days.

San Antonio weather for Sunday 6th September 2026

Expect broken clouds in San Antonio, Texas with a maximum temperature of 36°C, very high levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the east.

36
°C maximum temperature
26
°C minimum temperature
broken clouds
6
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
VH
very high heat & humidity
14
kph wind from E

San Antonio weather for Monday 7th September 2026

Expect scattered clouds in San Antonio, Texas with a maximum temperature of 37°C, very high levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-east.

37
°C maximum temperature
25
°C minimum temperature
scattered clouds
8
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
VH
very high heat & humidity
17
kph wind from SE

San Antonio weather for Tuesday 8th September 2026

Expect scattered clouds in San Antonio, Texas with a maximum temperature of 38°C, very high levels of heat & humidity, maximum UV of 10 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-east.

38
°C maximum temperature
25
°C minimum temperature
scattered clouds
7
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
VH
very high heat & humidity
20
kph wind from SE

San Antonio weather for Wednesday 9th September 2026

Expect scattered clouds in San Antonio, Texas with a maximum temperature of 37°C, very high levels of heat & humidity, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-east.

37
°C maximum temperature
24
°C minimum temperature
scattered clouds
7
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
VH
very high heat & humidity
16
kph wind from SE

San Antonio weather for Thursday 10th September 2026

Expect scattered clouds in San Antonio, Texas with a maximum temperature of 37°C, very high levels of heat & humidity, maximum UV of 10 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-east.