McCook, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for McCook, IL in one place.
Showers and thunderstorms likely after 1pm. Some of the storms could produce heavy rain. Mostly sunny. High near 91, with temperatures falling to around 84 in the afternoon. Heat index values as high as 100. West northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for McCook, 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: Jul 17, 2026 3:23 PM CDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for McCook, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 3:23 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in McCook
Saturday looks like the warmest upcoming period in McCook at 91 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Saturday at about 10 to 15 mph WNW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 3:23 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Areas of smoke between 8pm and 1am. Partly cloudy, with a low around 68. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunny, with a high near 84. Northeast wind around 5 mph.
Partly cloudy, with a low around 67.
Partly sunny, with a high near 87.
Showers and thunderstorms likely between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 72.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 86.
Partly cloudy, with a low around 65.
Sunny, with a high near 80.
Mostly clear, with a low around 62.
Sunny, with a high near 81.
Partly cloudy, with a low around 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Mostly Sunny then Showers And Thunderstorms Likely
|
91°F |
10 to 15 mph
WNW
|
|
Saturday Night
Jul 18
|
Areas Of Smoke
|
68°F |
5 to 10 mph
NNE
|
|
Sunday
Jul 19
|
Sunny
|
84°F |
5 mph
NE
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
67°F |
5 mph
SE
|
|
Monday
Jul 20
|
Partly Sunny
|
87°F |
5 to 15 mph
SSW
|
|
Monday Night
Jul 20
|
Showers And Thunderstorms Likely
|
72°F |
10 to 15 mph
WSW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Mostly Sunny
|
86°F |
10 to 15 mph
WNW
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
65°F |
10 to 15 mph
NNW
|
|
Wednesday
Jul 22
|
Sunny
|
80°F |
10 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
62°F |
0 to 10 mph
N
|
|
Thursday
Jul 23
|
Sunny
|
81°F |
5 to 10 mph
W
|
|
Thursday Night
Jul 23
|
Partly Cloudy
|
64°F |
0 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around McCook.