St Louis weather live forecast

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

Friday
14th Aug
36

27

9

8
Saturday
15th Aug
36

27

11

8
Sunday
16th Aug
34

27

6

8
Monday
17th Aug
31

24

6

8
Tuesday
18th Aug
32

22

9

8

5-day weather forecast updated at 04:00 on Friday 14th August 2026 GMT

More about St Louis

St Louis by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Missouri

GO Airport Shuttle discount code: 5% off airport transfers

Discount Code

Save EXTRA 5% on airport transfers worldwide
Book private taxis & shuttle buses with discount code
Enter in coupon box on 'Reservations' page

Show discount code

******WEB

Redeem GO Airport Shuttle discount code >>

Expires at 23:59 on Thursday 31st Dec 2026

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

St Louis weather forecast by day

Below are the detailed weather forecasts for St Louis for the next 5 days.

St Louis weather for Friday 14th August 2026

Expect isolated thunderstorms in St Louis, Missouri with a maximum temperature of 36°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 11% chance of some rain and little or no wind of 5 kph from the south.

36
°C maximum temperature
27
°C minimum temperature
isolated thunderstorms
9
hours of sunshine
8
UV index (Very High)
11
% chance of some rain
<2
mm of rainfall expected
H
high heat & humidity
5
kph wind from S

St Louis weather for Saturday 15th August 2026

Expect scattered clouds in St Louis, Missouri with a maximum temperature of 36°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the south-west.

36
°C maximum temperature
27
°C minimum temperature
scattered clouds
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
6
kph wind from SW

St Louis weather for Sunday 16th August 2026

Expect broken clouds in St Louis, Missouri with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 5 kph from the west.

34
°C maximum temperature
27
°C minimum temperature
broken clouds
6
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
5
kph wind from W

St Louis weather for Monday 17th August 2026

Expect isolated thunderstorms in St Louis, Missouri with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 36% chance of some rain and little or no wind of 6 kph from the north.

31
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
8
UV index (Very High)
36
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
6
kph wind from N

St Louis weather for Tuesday 18th August 2026

Expect isolated thunderstorms in St Louis, Missouri with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 12% chance of some rain and little or no wind of 4 kph from the south-east.