Mason County, IL Weather Forecast
County weather hub
Sunny
Compare major city weather across Mason County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 92. North northeast wind around 2 mph.
County Weather Overview
This county weather page brings together forecast coverage for Mason County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Mason County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 14 to Jul 18, 2026
- Latest sync
- Jul 12, 2026 8:29 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Mason County
Wednesday looks like the warmest upcoming period in Mason County at 93 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Saturday at about 9 mph SW.
The forecast from Jul 14 through Jul 18 stays mostly dry.
Forecast Details
- Last updated
- Jul 12, 2026 8:29 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 70. East southeast wind around 1 mph.
Sunny, with a high near 93. West northwest wind around 1 mph.
Clear, with a low around 71.
Sunny, with a high near 92.
Mostly clear, with a low around 71.
Sunny, with a high near 92.
Mostly clear, with a low around 73.
Sunny, with a high near 92.
Mostly clear, with a low around 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 14
|
Sunny
|
92°F |
2 mph
NNE
|
|
Tuesday Night
Jul 14
|
Clear
|
70°F |
1 mph
ESE
|
|
Wednesday
Jul 15
|
Sunny
|
93°F |
1 mph
WNW
|
|
Wednesday Night
Jul 15
|
Clear
|
71°F |
1 mph
WSW
|
|
Thursday
Jul 16
|
Sunny
|
92°F |
3 mph
WSW
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
71°F |
3 mph
SSW
|
|
Friday
Jul 17
|
Sunny
|
92°F |
3 to 8 mph
SW
|
|
Friday Night
Jul 17
|
Mostly Clear
|
73°F |
7 mph
SSW
|
|
Saturday
Jul 18
|
Sunny
|
92°F |
9 mph
SW
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
72°F |
8 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Mason County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Mason County.
Largest mapped city population in this region: 2,945.
