Marion weather live forecast

Today's maximum temperature in Marion is expected to be 28°C. Select a day from the live weather forecast for Marion, Illinois, USA for more weather parameters.

Wednesday
15th Apr
28

21

5

7
Thursday
16th Apr
26

18

6

7
Friday
17th Apr
29

17

7

7
Saturday
18th Apr
24

12

6

4
Sunday
19th Apr
16

7

13

8

5-day weather forecast updated at 04:01 on Wednesday 15th April 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 Wednesday 15th April 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 19% chance of some rain and a moderate breeze of 26 kph from the south-west.

28
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
7
UV index (High)
19
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
26
kph wind from SW

Marion weather for Thursday 16th April 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 5-10 mm of rainfall expected with 66% chance of some rain and a moderate breeze of 20 kph from the south-west.

26
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
66
% chance of some rain
<10
mm of rainfall expected
26
°C wind chill
20
kph wind from SW

Marion weather for Friday 17th April 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the south.

29
°C maximum temperature
17
°C minimum temperature
broken clouds
7
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from S

Marion weather for Saturday 18th April 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 10-20 mm of rainfall expected with 75% chance of some rain and a moderate breeze of 24 kph from the north-west.

24
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
4
UV index (Moderate)
75
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
24
kph wind from NW

Marion weather for Sunday 19th April 2026

Expect clear skies in Marion, Illinois with a maximum temperature of 16°C, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north-west.