Marion weather live forecast

Today's maximum temperature in Marion is expected to be 25°C. Select a day from the live weather forecast for Marion, Illinois, USA for more weather parameters.

Monday
25th May
25

16

8

UV7
Tuesday
26th May
23

19

4

UV3
Wednesday
27th May
25

20

4

UV3
Thursday
28th May
27

20

7

UV6
Friday
29th May
26

21

5

UV9

5-day weather forecast updated at 04:01 on Monday 25th 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 Monday 25th May 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 25°C, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the north-east.

25
°C maximum temperature
16
°C minimum temperature
broken clouds
8
hours of sunshine
UV7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from NE

Marion weather for Tuesday 26th May 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 23°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 77% chance of some rain and a light breeze of 11 kph from the east.

23
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
UV3
UV index (Moderate)
77
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
11
kph wind from E

Marion weather for Wednesday 27th May 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 25°C, maximum UV of 3 (Moderate) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 79% chance of some rain and a light breeze of 9 kph from the south.

25
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
UV3
UV index (Moderate)
79
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
9
kph wind from S

Marion weather for Thursday 28th May 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 27°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 light breeze of 11 kph from the east.

27
°C maximum temperature
20
°C minimum temperature
broken clouds
7
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
11
kph wind from E

Marion weather for Friday 29th May 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 70% chance of some rain and a light breeze of 11 kph from the east.