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
26th Mar
29

17

12

8
Friday
27th Mar
22

4

3

6
Saturday
28th Mar
14

2

13

8
Sunday
29th Mar
21

6

7

6
Monday
30th Mar
26

14

10

6

5-day weather forecast updated at 04:01 on Friday 27th March 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 26th March 2026

Expect clear skies in Marion, Illinois with a maximum temperature of 29°C, low 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 fresh breeze of 30 kph from the south-west.

29
°C maximum temperature
17
°C minimum temperature
clear skies
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
30
kph wind from SW

Marion weather for Friday 27th March 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 22°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 77% chance of some rain and a moderate breeze of 24 kph from the north.

22
°C maximum temperature
4
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
6
UV index (High)
77
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
24
kph wind from N

Marion weather for Saturday 28th March 2026

Expect clear skies in Marion, Illinois with a maximum temperature of 14°C, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north.

14
°C maximum temperature
2
°C minimum temperature
clear skies
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
14
°C wind chill
14
kph wind from N

Marion weather for Sunday 29th March 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 21°C, maximum UV of 6 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south.

21
°C maximum temperature
6
°C minimum temperature
broken clouds
7
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
21
°C wind chill
20
kph wind from S

Marion weather for Monday 30th March 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 26°C, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 26 kph from the south.