San Antonio weather live forecast

Today's maximum temperature in San Antonio is expected to be 18°C. Select a day from the live weather forecast for San Antonio, Texas, USA for more weather parameters.

Monday
20th Apr
18

12

0

1
Tuesday
21st Apr
21

16

2

2
Wednesday
22nd Apr
28

19

5

7
Thursday
23rd Apr
29

20

4

4
Friday
24th Apr
30

21

6

6

5-day weather forecast updated at 04:00 on Monday 20th April 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 20th April 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 18°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 96% chance of some rain and a moderate breeze of 20 kph from the north-east.

18
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
1
UV index (Low)
96
% chance of some rain
<30
mm of rainfall expected
18
°C wind chill
20
kph wind from NE

San Antonio weather for Tuesday 21st April 2026

Expect isolated thunderstorms in San Antonio, Texas with a maximum temperature of 21°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 74% chance of some rain and a gentle breeze of 16 kph from the east.

21
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
2
UV index (Low)
74
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
16
kph wind from E

San Antonio weather for Wednesday 22nd April 2026

Expect broken clouds in San Antonio, Texas with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-east.

28
°C maximum temperature
19
°C minimum temperature
broken clouds
5
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
16
kph wind from SE

San Antonio weather for Thursday 23rd April 2026

Expect broken clouds in San Antonio, Texas with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south-east.

29
°C maximum temperature
20
°C minimum temperature
broken clouds
4
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from SE

San Antonio weather for Friday 24th April 2026

Expect broken clouds in San Antonio, Texas with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the south.