Marion weather live forecast

Today's maximum temperature in Marion is expected to be 31°C. Select a day from the live weather forecast for Marion, Illinois, USA for more weather parameters.

Thursday
27th Aug
31

20

10

7
Friday
28th Aug
29

19

10

7
Saturday
29th Aug
31

17

12

8
Sunday
30th Aug
32

18

11

8
Monday
31st Aug
32

20

13

8

5-day weather forecast updated at 04:01 on Thursday 27th August 2026 GMT

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

Marion weather forecast by day

Below are the detailed weather forecasts for Marion for the next 5 days.

Marion weather for Thursday 27th August 2026

Expect scattered clouds in Marion, Illinois with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north.

31
°C maximum temperature
20
°C minimum temperature
scattered clouds
10
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from N

Marion weather for Friday 28th August 2026

Expect scattered clouds in Marion, Illinois with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north.

29
°C maximum temperature
19
°C minimum temperature
scattered clouds
10
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
11
kph wind from N

Marion weather for Saturday 29th August 2026

Expect clear skies in Marion, Illinois with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south.

31
°C maximum temperature
17
°C minimum temperature
clear skies
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
7
kph wind from S

Marion weather for Sunday 30th August 2026

Expect clear skies in Marion, Illinois with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south.

32
°C maximum temperature
18
°C minimum temperature
clear skies
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from S

Marion weather for Monday 31st August 2026

Expect clear skies in Marion, Illinois with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south.