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.

Monday
28th Sep
36

24

8

9
Tuesday
29th Sep
34

24

5

8
Wednesday
30th Sep
35

25

6

8
Thursday
1st Oct
29

23

3

6
Friday
2nd Oct
28

22

4

9

5-day weather forecast updated at 04:00 on Monday 28th 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 Monday 28th September 2026

Expect scattered clouds in San Antonio, Texas with a maximum temperature of 36°C, 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 moderate breeze of 21 kph from the south-east.

36
°C maximum temperature
24
°C minimum temperature
scattered clouds
8
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
21
kph wind from SE

San Antonio weather for Tuesday 29th September 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 22% chance of some rain and a moderate breeze of 24 kph from the south-east.

34
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
8
UV index (Very High)
22
% chance of some rain
<2
mm of rainfall expected
H
high heat & humidity
24
kph wind from SE

San Antonio weather for Wednesday 30th September 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a moderate breeze of 24 kph from the south-east.

35
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
8
UV index (Very High)
58
% chance of some rain
<5
mm of rainfall expected
H
high heat & humidity
24
kph wind from SE

San Antonio weather for Thursday 1st October 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 40-50 mm of rainfall expected with 91% chance of some rain and a moderate breeze of 20 kph from the south-east.

29
°C maximum temperature
23
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
6
UV index (High)
91
% chance of some rain
<50
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from SE

San Antonio weather for Friday 2nd October 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 28°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 74% chance of some rain and a gentle breeze of 18 kph from the north-east.