McLean County, IL Weather Forecast
County weather hub
Clear
Compare major city weather across McLean County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Clear, with a low around 69. West southwest wind around 15 mph, with gusts as high as 22 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
- Oct 13 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 6:06 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in McLean County
Tuesday looks like the warmest upcoming period in McLean County at 86 degrees F.
Friday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Friday at about 21 to 24 mph NNW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 6:06 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
Sunny, with a high near 86. West southwest wind 8 to 13 mph, with gusts as high as 20 mph.
A chance of showers and thunderstorms between 10pm and 1am, then showers and thunderstorms likely between 1am and 3am, then a chance of showers and thunderstorms between 3am and 4am, then showers and thunderstorms likely. Mostly cloudy, with a low around 66. North northeast wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 10am, then a slight chance of showers and thunderstorms between 10am and 4pm. Mostly cloudy, with a high near 72. East northeast wind 5 to 12 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers after 1am. Mostly cloudy, with a low around 58. Northeast wind around 13 mph, with gusts as high as 18 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 7am, then showers and thunderstorms. Mostly cloudy, with a high near 70. Southeast wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Showers and thunderstorms before 1am. Mostly cloudy, with a low around 48. West northwest wind 10 to 21 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
Mostly sunny, with a high near 57.
Areas of frost after 5am. Mostly clear, with a low around 36.
Areas of frost before 8am. Sunny, with a high near 61.
Clear, with a low around 38.
Sunny, with a high near 69.
Partly cloudy, with a low around 47.
Mostly sunny, with a high near 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Oct 13
|
Clear
|
69°F |
15 mph
WSW
|
|
Tuesday
Oct 13
|
Sunny
|
86°F |
8 to 13 mph
WSW
|
|
Tuesday Night
Oct 13
|
Chance Showers And Thunderstorms
|
66°F |
6 mph
NNE
|
|
Wednesday
Oct 14
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
72°F |
5 to 12 mph
ENE
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy then Chance Rain Showers
|
58°F |
13 mph
NE
|
|
Thursday
Oct 15
|
Showers And Thunderstorms
|
70°F |
10 mph
SE
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms
|
48°F |
10 to 21 mph
WNW
|
|
Friday
Oct 16
|
Mostly Sunny
|
57°F |
21 to 24 mph
NNW
|
|
Friday Night
Oct 16
|
Mostly Clear then Areas Of Frost
|
36°F |
5 to 17 mph
N
|
|
Saturday
Oct 17
|
Areas Of Frost then Sunny
|
61°F |
6 mph
W
|
|
Saturday Night
Oct 17
|
Clear
|
38°F |
5 to 8 mph
S
|
|
Sunday
Oct 18
|
Sunny
|
69°F |
9 to 14 mph
SSW
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
47°F |
10 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
72°F |
9 mph
SSW
|
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.
