San Antonio weather live forecast

Today's maximum temperature in San Antonio is expected to be 33°C. Select a day from the live weather forecast for San Antonio, Texas, USA for more weather parameters.

Saturday
16th May
33

21

8

10
Sunday
17th May
32

22

3

5
Monday
18th May
34

24

6

5
Tuesday
19th May
33

23

4

7
Wednesday
20th May
30

22

3

7

5-day weather forecast updated at 04:00 on Saturday 16th May 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 Saturday 16th May 2026

Expect broken clouds in San Antonio, Texas with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 10 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 25 kph from the south-east.

33
°C maximum temperature
21
°C minimum temperature
broken clouds
8
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
25
kph wind from SE

San Antonio weather for Sunday 17th May 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 5 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 33% chance of some rain and a moderate breeze of 26 kph from the south-east.

32
°C maximum temperature
22
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
5
UV index (Moderate)
33
% chance of some rain
<2
mm of rainfall expected
H
high heat & humidity
26
kph wind from SE

San Antonio weather for Monday 18th May 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 52% chance of some rain and a moderate breeze of 26 kph from the south-east.

34
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
5
UV index (Moderate)
52
% chance of some rain
<10
mm of rainfall expected
H
high heat & humidity
26
kph wind from SE

San Antonio weather for Tuesday 19th May 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and a moderate breeze of 23 kph from the south-east.

33
°C maximum temperature
23
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
64
% chance of some rain
<5
mm of rainfall expected
H
high heat & humidity
23
kph wind from SE

San Antonio weather for Wednesday 20th May 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 74% chance of some rain and a gentle breeze of 18 kph from the south-east.