McLean, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for McLean, IL in one place.
Mostly sunny, with a high near 77. West southwest wind around 10 mph, with gusts as high as 21 mph. 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: Apr 21, 2026 6:53 AM CDT.
The active forecast window currently covers Apr 22 to Apr 27, 2026 for McLean, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 27, 2026
- Latest sync
- Apr 21, 2026 6:53 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in McLean
Thursday looks like the warmest upcoming period in McLean at 82 degrees F.
Saturday Night is the coolest period ahead with temperatures near 48 degrees F.
The strongest winds are forecast for Thursday at about 9 to 21 mph S.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 21, 2026 6:53 AM CDT
- Coverage
- 6 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
Mostly clear, with a low around 59. South wind around 9 mph, with gusts as high as 16 mph.
Mostly sunny, with a high near 82. South wind 9 to 21 mph, with gusts as high as 29 mph.
A slight chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 61. South wind 15 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 60%.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 71.
Partly cloudy, with a low around 48.
Partly sunny, with a high near 72.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 54.
A chance of showers and thunderstorms. Mostly cloudy, with a high near 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Mostly Sunny
|
77°F |
10 mph
WSW
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
59°F |
9 mph
S
|
|
Thursday
Apr 23
|
Mostly Sunny
|
82°F |
9 to 21 mph
S
|
|
Thursday Night
Apr 23
|
Slight Chance Showers And Thunderstorms
|
61°F |
15 to 20 mph
S
|
|
Friday
Apr 24
|
Showers And Thunderstorms Likely
|
75°F |
15 mph
SW
|
|
Friday Night
Apr 24
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
51°F |
12 mph
NNW
|
|
Saturday
Apr 25
|
Slight Chance Rain Showers then Mostly Sunny
|
71°F |
13 mph
NNE
|
|
Saturday Night
Apr 25
|
Partly Cloudy
|
48°F |
12 mph
NE
|
|
Sunday
Apr 26
|
Partly Sunny
|
72°F |
13 mph
E
|
|
Sunday Night
Apr 26
|
Chance Showers And Thunderstorms
|
54°F |
12 mph
E
|
|
Monday
Apr 27
|
Chance Showers And Thunderstorms
|
72°F |
12 to 16 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around McLean.