Marion, IL Weather Forecast

Local 7-day forecast

90°

Sunny

Track current conditions, temperature changes, wind, and the full daily outlook for Marion, IL in one place.

Wednesday, July 15, 2026

Wind: 0 to 3 mph E

Wednesday

Sunny, with a high near 90. East wind 0 to 3 mph.

Local 7-day forecast

Local Weather Overview

This forecast page for Marion, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 14, 2026 9:47 PM CDT.

The active forecast window currently covers Jul 15 to Jul 21, 2026 for Marion, IL.

Page Snapshot

Page focus: city weather
Forecast window: Jul 15 to Jul 21, 2026
Latest sync: Jul 14, 2026 9:47 PM CDT
Forecast office: PAH
Source: NOAA / NWS

Next High

90°F

Wednesday

Next Low

72°F

Wednesday Night

Rain Outlook

Periods mentioning precipitation

Windiest

5 to 10 mph

Tuesday

Daily Outlook

Today

Jul 15

Sunny

90 °F

/ 72°F

Wind 0 to 3 mph

Thu

Jul 16

Sunny then Chance Showers And Thunderstorms

90 °F

/ 73°F

Wind 0 to 5 mph

Fri

Jul 17

Chance Showers And Thunderstorms

89 °F

/ 72°F

Wind 1 to 6 mph

Sat

Jul 18

Mostly Sunny then Chance Showers And Thunderstorms

90 °F

/ 73°F

Wind 3 to 9 mph

Sun

Jul 19

Sunny then Slight Chance Showers And Thunderstorms

90 °F

/ 72°F

Wind 5 to 8 mph

Mon

Jul 20

Slight Chance Showers And Thunderstorms

90 °F

/ 72°F

Wind 3 to 9 mph

Tue

Jul 21

Mostly Sunny then Slight Chance Showers And Thunderstorms

89 °F

Wind 5 to 10 mph

This Week in Marion

Wednesday looks like the warmest upcoming period in Marion at 90 degrees F.

Wednesday Night is the coolest period ahead with temperatures near 72 degrees F.

The strongest winds are forecast for Tuesday at about 5 to 10 mph WNW.

Precipitation is mentioned in 11 upcoming forecast periods.

Forecast Details

Last updated: Jul 14, 2026 9:47 PM CDT
Coverage: 7 days
Time zone: America/Chicago
Forecast office: PAH
Radar station: KVWX

Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.

Open NOAA source

Extended Forecast

Wednesday Night

Jul 15

72°F

Mostly Clear

2 mph SE

Mostly clear, with a low around 72. Southeast wind around 2 mph.

Thursday

Jul 16

90°F

Sunny then Chance Showers And Thunderstorms

0 to 5 mph S

A chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. South wind 0 to 5 mph. Chance of precipitation is 30%.

Thursday Night

Jul 16

73°F

Chance Showers And Thunderstorms then Mostly Clear

1 to 5 mph SW

A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. Southwest wind 1 to 5 mph. Chance of precipitation is 30%.

Friday

Jul 17

89°F

Chance Showers And Thunderstorms

1 to 6 mph WSW

A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms. Mostly sunny, with a high near 89. West southwest wind 1 to 6 mph. Chance of precipitation is 80%.

Friday Night

Jul 17

72°F

Showers And Thunderstorms then Slight Chance Showers And Thunderstorms

3 mph WSW

Showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 72. West southwest wind around 3 mph.

Saturday

Jul 18

90°F

Mostly Sunny then Chance Showers And Thunderstorms

3 to 9 mph WSW

A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. West southwest wind 3 to 9 mph.

Saturday Night

Jul 18

73°F

Chance Showers And Thunderstorms then Mostly Clear

6 mph WSW

A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. West southwest wind around 6 mph.

Sunday

Jul 19

90°F

Sunny then Slight Chance Showers And Thunderstorms

5 to 8 mph W

A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. West wind 5 to 8 mph.

Sunday Night

Jul 19

72°F

Slight Chance Showers And Thunderstorms then Mostly Clear

2 to 6 mph SW

A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 72. Southwest wind 2 to 6 mph.

Monday

Jul 20

90°F

Slight Chance Showers And Thunderstorms

3 to 9 mph WSW

A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 90. West southwest wind 3 to 9 mph.

Monday Night

Jul 20

72°F

Slight Chance Showers And Thunderstorms

5 to 8 mph WSW

A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. West southwest wind 5 to 8 mph.

Tuesday

Jul 21

89°F

Mostly Sunny then Slight Chance Showers And Thunderstorms

5 to 10 mph WNW

A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. West northwest wind 5 to 10 mph.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Wednesday Jul 15	Sunny	90°F	0 to 3 mph E	Sunny, with a high near 90. East wind 0 to 3 mph.
Wednesday Night Jul 15	Mostly Clear	72°F	2 mph SE	Mostly clear, with a low around 72. Southeast wind around 2 mph.
Thursday Jul 16	Sunny then Chance Showers And Thunderstorms	90°F	0 to 5 mph S	A chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. South wind 0 to 5 mph. Chance of precipitat...
Thursday Night Jul 16	Chance Showers And Thunderstorms then Mostly Clear	73°F	1 to 5 mph SW	A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. Southwest wind 1 to 5 mph. Chance...
Friday Jul 17	Chance Showers And Thunderstorms	89°F	1 to 6 mph WSW	A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms. Mostly sunny, with a high nea...
Friday Night Jul 17	Showers And Thunderstorms then Slight Chance Showers And Thunderstorms	72°F	3 mph WSW	Showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Partly clou...
Saturday Jul 18	Mostly Sunny then Chance Showers And Thunderstorms	90°F	3 to 9 mph WSW	A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. West southwest wind 3 to 9 mph.
Saturday Night Jul 18	Chance Showers And Thunderstorms then Mostly Clear	73°F	6 mph WSW	A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. West southwest wind around 6 mph.
Sunday Jul 19	Sunny then Slight Chance Showers And Thunderstorms	90°F	5 to 8 mph W	A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. West wind 5 to 8 mph.
Sunday Night Jul 19	Slight Chance Showers And Thunderstorms then Mostly Clear	72°F	2 to 6 mph SW	A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 72. Southwest wind 2 to 6 mph.
Monday Jul 20	Slight Chance Showers And Thunderstorms	90°F	3 to 9 mph WSW	A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 90. West southwest wind 3 to 9 mp...
Monday Night Jul 20	Slight Chance Showers And Thunderstorms	72°F	5 to 8 mph WSW	A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. West southwest wind 5 to 8...
Tuesday Jul 21	Mostly Sunny then Slight Chance Showers And Thunderstorms	89°F	5 to 10 mph WNW	A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. West northwest wind 5 to 10 m...

Nearby Forecasts

Explore weather pages for nearby cities and major places around Marion.

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Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.