Marion weather live forecast

Today's maximum temperature in Marion is expected to be 20°C. Select a day from the live weather forecast for Marion, Illinois, USA for more weather parameters.

Thursday
21st May
20

16

2

UV5
Friday
22nd May
20

17

0

UV2
Saturday
23rd May
26

17

5

UV5
Sunday
24th May
24

18

1

UV7
Monday
25th May
25

19

0

UV2

5-day weather forecast updated at 04:01 on Thursday 21st 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 21st May 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north-east.

20
°C maximum temperature
16
°C minimum temperature
broken clouds
2
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
14
kph wind from NE

Marion weather for Friday 22nd May 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 20°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 89% chance of some rain and a gentle breeze of 14 kph from the east.

20
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
UV2
UV index (Low)
89
% chance of some rain
<20
mm of rainfall expected
20
°C wind chill
14
kph wind from E

Marion weather for Saturday 23rd May 2026

Expect broken clouds in Marion, Illinois with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the west.

26
°C maximum temperature
17
°C minimum temperature
broken clouds
5
hours of sunshine
UV5
UV index (Moderate)
0
mm of rainfall expected
L
low heat & humidity
8
kph wind from W

Marion weather for Sunday 24th May 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 24°C, maximum UV of 7 (High) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 56% chance of some rain and a light breeze of 8 kph from the south.

24
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
UV7
UV index (High)
56
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
8
kph wind from S

Marion weather for Monday 25th May 2026

Expect isolated thunderstorms in Marion, Illinois with a maximum temperature of 25°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 56% chance of some rain and a light breeze of 9 kph from the south-east.