Marion, IL Weather Forecast

Feedback E-mail the Weather

Quick Weather Clicks

Marion, IL Weather Forecast

Current Conditions

Settings
Marion IL weather  - Clear - 57°F
Clear
57°F
Updated 12:53 am
Feels Like 59°F
Humidity 100%
Wind NE 3 mph
Barometer  30.19 in
Dew Point 57°F
Marion IL weather  - Clear - 14°C
Clear
14°C
Updated 12:53 am
Feels Like 15°C
Humidity 100%
Wind NE 5 km/h
Barometer  102.2 kPa
Dew Point 14°C

Marion Weather Forecast

TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY SATURDAY SATURDAY NIGHT SUNDAY MONDAY MONDAY NIGHT TUESDAY
Marion, IL Weather - Tonight Mostly Cloudy Marion, IL Weather - Wednesday Mostly Cloudy Marion, IL Weather - Wednesday Night Mostly Cloudy Marion, IL Weather - Thursday Partly Sunny Marion, IL Weather - Thursday Night Partly Cloudy Marion, IL Weather - Friday Partly Cloudy Marion, IL Weather - Saturday Partly Cloudy Marion, IL Weather - Saturday Night Mostly Cloudy Marion, IL Weather - Sunday Partly Cloudy Marion, IL Weather - Monday Partly Cloudy Marion, IL Weather - Monday Night Partly Cloudy Marion, IL Weather - Tuesday Chance Of Showers
Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Sunny Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Chance of Showers
Lo: 59°FLo: 15°C Hi: 75°FHi: 24°C
Lo: 59°FLo: 15°C Hi: 79°FHi: 26°C
Lo: 59°FLo: 15°C Hi: 80°FHi: 27°C
Lo: 55°FLo: 13°C
Hi: 80°FHi: 27°C
Lo: 55°FLo: 13°C
Lo: 55°FLo: 13°C Hi: 81°FHi: 27°C
Lo: 59°FLo: 15°C
Hi: 81°FHi: 27°C
Lo: 59°FLo: 15°C
Lo: 61°FLo: 16°C Hi: 85°FHi: 29°C
POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 1107 PM CDT Tue Sep 22 2026 Marion, IL Weather - WeatherWorld.com

Trending Headlines

Marion Radar Loop

Use the map search tool if you want to place a location marker on the radar map...

Marion Quick Facts

National Two Day Weather Forecast


E-mail the Marion Weather Forecast

Voice your opinion or tell us about page issues...

Marion Forecast Discussion

Meteorlogic Glosserator
Instant definitions for any meteorological term.

Issued: 1036 PM CDT Tue Sep 22 2026

Key Messages

  • Low clouds are keeping temperatures even cooler than expected today. Some locations may not reach 70 degrees. The clouds and cooler air could linger through tomorrow as well.
  • Heading into the weekend, temperatures will linger just below normal levels. Readings will eventually trend warmer early next week.

Discussion

... Issued at 1205 PM CDT Tue Sep 22 2026

Well we are really doubling down on the cooler air today, as low clouds persist across most of the region. There is a small break o...