Marion County, IL Weather Forecast
County weather hub
Chance Rain Showers then Slight Chance Showers And Thunderstorms
Compare major city weather across Marion County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers before 4pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 72. East wind around 7 mph. Chance of precipitation is 30%.
County Weather Overview
This county weather page brings together forecast coverage for Marion County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 3 of 3 mapped cities in Marion County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 11 to Apr 16, 2026
- Latest sync
- Apr 10, 2026 1:16 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Marion County
Tuesday looks like the warmest upcoming period in Marion County at 83 degrees F.
Saturday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Sunday at about 8 to 18 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 10, 2026 1:16 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 59. Southeast wind 5 to 8 mph. Chance of precipitation is 20%.
Mostly cloudy, with a high near 79.
A slight chance of rain showers between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
72°F |
7 mph
E
|
|
Saturday Night
Apr 11
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
59°F |
5 to 8 mph
SE
|
|
Sunday
Apr 12
|
Mostly Cloudy
|
79°F |
8 to 18 mph
S
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
65°F |
14 mph
S
|
|
Monday
Apr 13
|
Showers And Thunderstorms Likely
|
80°F |
14 to 17 mph
SW
|
|
Monday Night
Apr 13
|
Slight Chance Showers And Thunderstorms
|
67°F |
15 mph
SW
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms
|
83°F |
13 to 17 mph
SW
|
|
Tuesday Night
Apr 14
|
Chance Showers And Thunderstorms
|
66°F |
15 mph
S
|
|
Wednesday
Apr 15
|
Chance Showers And Thunderstorms
|
81°F |
14 to 17 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
59°F |
7 to 13 mph
SW
|
|
Thursday
Apr 16
|
Chance Showers And Thunderstorms
|
77°F |
7 to 10 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Marion County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Marion County.
Largest mapped city population in this region: 6,952.
