Marion weather live forecast

Today's maximum temperature in Marion is expected to be 29°C. Select a day from the live weather forecast for Marion, Illinois, USA for more weather parameters.

Monday
6th Jul
29

21

10

8
Tuesday
7th Jul
29

21

8

8
Wednesday
8th Jul
31

21

8

7
Thursday
9th Jul
31

22

7

8
Friday
10th Jul
31

22

7

6

5-day weather forecast updated at 04:01 on Monday 6th July 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 Monday 6th July 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0-2 mm of rainfall expected with 34% chance of some rain and a light breeze of 9 kph from the north.

29
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
10
hours of sunshine
8
UV index (Very High)
34
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from N

Marion weather for Tuesday 7th July 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 48% chance of some rain and a light breeze of 9 kph from the north.

29
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
8
UV index (Very High)
48
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from N

Marion weather for Wednesday 8th July 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 51% chance of some rain and a light breeze of 9 kph from the south.

31
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
7
UV index (High)
51
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from S

Marion weather for Thursday 9th July 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a gentle breeze of 17 kph from the south-west.

31
°C maximum temperature
22
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
44
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
17
kph wind from SW

Marion weather for Friday 10th July 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 66% chance of some rain and a gentle breeze of 15 kph from the south-west.