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.

Sunday
27th Sep
25

14

4

5
Monday
28th Sep
24

11

11

6
Tuesday
29th Sep
27

11

10

6
Wednesday
30th Sep
30

15

2

4
Thursday
1st Oct
30

21

7

5

5-day weather forecast updated at 04:01 on Sunday 27th September 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 Sunday 27th September 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the north-east.

25
°C maximum temperature
14
°C minimum temperature
broken clouds
4
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from NE

Marion weather for Monday 28th September 2026

Expect clear skies in Marion, Illinois with a maximum temperature of 24°C, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the north-east.

24
°C maximum temperature
11
°C minimum temperature
clear skies
11
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
24
°C wind chill
6
kph wind from NE

Marion weather for Tuesday 29th September 2026

Expect scattered clouds in Marion, Illinois with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south-east.

27
°C maximum temperature
11
°C minimum temperature
scattered clouds
10
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
7
kph wind from SE

Marion weather for Wednesday 30th September 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south.

30
°C maximum temperature
15
°C minimum temperature
broken clouds
2
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from S

Marion weather for Thursday 1st October 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the south.