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McCook, IL 7-Day Weather Forecast
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McCook Weather Forecast
McCook, IL Weather Forecast Date: 1006 AM CDT Thu Sep 03 2026
Weather forecast for McCook, IL
Today Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Rest of Today... Mostly sunny late in the morning, then becoming partly cloudy. A slight chance of showers and thunderstorms late in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. West winds around 10 mph, becoming southeast in the afternoon. Chance of precipitation 40%. Heat index values up to 103. |
Fri Hi: 91°FHi: 33°C Lo: 75°F Lo: 24°C |
Friday... Mostly cloudy in the morning, then clearing. A chance of showers and thunderstorms early in the morning, then a slight chance of showers and thunderstorms late in the morning. Humid with highs in the lower 90s inland, but only in the mid 80s near the lake. Temperature falling into the lower 80s in the afternoon. Southeast winds 5 to 10 mph, becoming west in the afternoon. Chance of precipitation 50%. Heat index values up to 101. |
| Sat Hi: 81°FHi: 27°C Lo: 69°F Lo: 21°C |
Saturday... Partly cloudy. A slight chance of showers and thunderstorms in the morning. Humid with highs in the lower 80s inland, but only in the upper 70s near the lake. Northeast winds around 5 mph, increasing to around 10 mph in the afternoon. Chance of precipitation 20%. |
| Sun Hi: 79°FHi: 26°C Lo: 69°F Lo: 21°C |
Sunday... Partly cloudy. Highs in the upper 70s. |
| Labor Day Hi: 81°FHi: 27°C Lo: 69°F Lo: 21°C |
Labor Day... Partly cloudy. Highs in the lower 80s. |
| Tue Hi: 85°FHi: 29°C Lo: 71°F Lo: 22°C |
Tuesday... Partly cloudy. Highs in the mid 80s. |
Wed Hi: 85°FHi: 29°C |
Wednesday... A chance of showers in the morning. Mostly cloudy. Highs in the mid 80s. Chance of precipitation 30%. |
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