McLean, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for McLean, IL in one place.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for McLean, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 17, 2026 6:41 AM CDT.
The active forecast window currently covers Sep 17 to Sep 23, 2026 for McLean, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 23, 2026
- Latest sync
- Sep 17, 2026 6:41 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in McLean
Thursday looks like the warmest upcoming period in McLean at 90 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Monday Night at about 12 to 17 mph NE.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 17, 2026 6:41 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
A chance of showers and thunderstorms before 11am. Partly sunny, with a high near 90. Southeast wind 5 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms after 9pm. Partly cloudy, with a low around 68. Northeast wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Partly sunny, with a high near 85. East northeast wind around 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. Southeast wind around 12 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 7am. Partly sunny, with a high near 90. South southwest wind around 13 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 69. West southwest wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 73.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
A chance of rain showers before 7am. Partly sunny, with a high near 73.
Partly cloudy, with a low around 56.
Mostly sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Sep 17
|
Chance Showers And Thunderstorms
|
71°F |
5 mph
SE
|
|
Thursday
Sep 17
|
Chance Showers And Thunderstorms then Partly Sunny
|
90°F |
5 to 8 mph
SE
|
|
Thursday Night
Sep 17
|
Chance Showers And Thunderstorms
|
68°F |
8 mph
NE
|
|
Friday
Sep 18
|
Chance Showers And Thunderstorms
|
85°F |
8 mph
ENE
|
|
Friday Night
Sep 18
|
Partly Cloudy then Chance Showers And Thunderstorms
|
69°F |
12 mph
SE
|
|
Saturday
Sep 19
|
Chance Rain Showers then Partly Sunny
|
90°F |
13 mph
SSW
|
|
Saturday Night
Sep 19
|
Chance Showers And Thunderstorms
|
69°F |
5 to 10 mph
WSW
|
|
Sunday
Sep 20
|
Chance Showers And Thunderstorms
|
81°F |
6 to 13 mph
N
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
62°F |
10 to 16 mph
NE
|
|
Monday
Sep 21
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
73°F |
12 to 15 mph
ENE
|
|
Monday Night
Sep 21
|
Chance Showers And Thunderstorms
|
58°F |
12 to 17 mph
NE
|
|
Tuesday
Sep 22
|
Chance Rain Showers then Partly Sunny
|
73°F |
13 mph
NE
|
|
Tuesday Night
Sep 22
|
Partly Cloudy
|
56°F |
6 to 13 mph
NE
|
|
Wednesday
Sep 23
|
Mostly Sunny
|
76°F |
9 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around McLean.