Marion weather live forecast

Today's maximum temperature in Marion is expected to be 34°C. Select a day from the live weather forecast for Marion, Illinois, USA for more weather parameters.

Friday
3rd Jul
34

25

10

8
Saturday
4th Jul
32

24

8

8
Sunday
5th Jul
31

24

7

7
Monday
6th Jul
30

23

8

8
Tuesday
7th Jul
30

22

8

8

5-day weather forecast updated at 04:01 on Friday 3rd 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 Friday 3rd July 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 34°C, high 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 33% chance of some rain and a light breeze of 12 kph from the south.

34
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
10
hours of sunshine
8
UV index (Very High)
33
% chance of some rain
<2
mm of rainfall expected
H
high heat & humidity
12
kph wind from S

Marion weather for Saturday 4th July 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 32°C, high 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 65% chance of some rain and a light breeze of 10 kph from the south-west.

32
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
8
UV index (Very High)
65
% chance of some rain
<5
mm of rainfall expected
H
high heat & humidity
10
kph wind from SW

Marion weather for Sunday 5th 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 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 61% chance of some rain and a light breeze of 9 kph from the west.

31
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
7
UV index (High)
61
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
9
kph wind from W

Marion weather for Monday 6th July 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 48% chance of some rain and a light breeze of 8 kph from the north.

30
°C maximum temperature
23
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
8
UV index (Very High)
48
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
8
kph wind from N

Marion weather for Tuesday 7th July 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a light breeze of 9 kph from the north.