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.

Thursday
28th May
29

19

7

6
Friday
29th May
25

19

1

5
Saturday
30th May
27

19

6

6
Sunday
31st May
26

17

6

7
Monday
1st Jun
27

15

12

9

5-day weather forecast updated at 04:01 on Thursday 28th May 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 28th May 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the east.

29
°C maximum temperature
19
°C minimum temperature
broken clouds
7
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
16
kph wind from E

Marion weather for Friday 29th May 2026

Expect mostly cloudy with light rain in Marion, Illinois with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 11 kph from the east.

25
°C maximum temperature
19
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
5
UV index (Moderate)
25
% chance of some rain
<2
mm of rainfall expected
25
°C wind chill
11
kph wind from E

Marion weather for Saturday 30th May 2026

Expect sunshine and showers in Marion, Illinois with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 25% chance of some rain and a light breeze of 12 kph from the north-east.

27
°C maximum temperature
19
°C minimum temperature
sunshine and showers
6
hours of sunshine
6
UV index (High)
25
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
12
kph wind from NE

Marion weather for Sunday 31st May 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 26°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 19% chance of some rain and a light breeze of 12 kph from the east.

26
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
19
% chance of some rain
<5
mm of rainfall expected
26
°C wind chill
12
kph wind from E

Marion weather for Monday 1st June 2026

Expect scattered clouds in Marion, Illinois with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north-east.