McLean County, IL Weather Forecast
County weather hub
Patchy Fog then Sunny
Compare major city weather across McLean County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Patchy fog before 8am. Sunny, with a high near 90. North northeast wind 2 to 6 mph.
County Weather Overview
This county weather page brings together forecast coverage for McLean County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 4 of 4 mapped cities in McLean County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 14 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 8:31 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in McLean County
Thursday looks like the warmest upcoming period in McLean County at 92 degrees F.
Monday Night is the coolest period ahead with temperatures near 65 degrees F.
The strongest winds are forecast for Saturday at about 9 to 15 mph WSW.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 8:31 AM CDT
- Coverage
- 7 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
Patchy fog after 4am. Mostly clear, with a low around 70. South southwest wind around 5 mph.
Patchy fog before 8am. Sunny, with a high near 91. West wind around 3 mph.
Mostly clear, with a low around 71. Heat index values as high as 101. Southwest wind around 3 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. Southwest wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 72. South southwest wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 89. Southwest wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly clear, with a low around 70.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.
A slight chance of showers and thunderstorms. Mostly clear, with a low around 67.
A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 86.
Partly cloudy, with a low around 65.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 14
|
Patchy Fog then Sunny
|
90°F |
2 to 6 mph
NNE
|
|
Tonight
Jul 14
|
Mostly Clear then Patchy Fog
|
70°F |
5 mph
SSW
|
|
Wednesday
Jul 15
|
Patchy Fog then Sunny
|
91°F |
3 mph
W
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
71°F |
3 mph
SW
|
|
Thursday
Jul 16
|
Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
6 mph
SW
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
72°F |
6 mph
SSW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
89°F |
6 to 9 mph
SW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
71°F |
9 mph
WSW
|
|
Saturday
Jul 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
89°F |
9 to 15 mph
WSW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
70°F |
10 to 14 mph
WSW
|
|
Sunday
Jul 19
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
87°F |
12 to 15 mph
NW
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms
|
67°F |
9 to 15 mph
SSE
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms then Sunny
|
86°F |
10 to 14 mph
WSW
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
65°F |
8 to 13 mph
WSW
|
Major City Forecasts
Live forecast snapshots for major cities across McLean County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in McLean County.
Largest mapped city population in this region: 77,132.
