McCook, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McCook, a village in Cook County, Illinois.
This Afternoon
64°F
Slight Chance Rain Showers
A slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 64, with temperatures falling to around 57 in the afternoon. West southwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for McCook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 64°F | Slight Chance Rain Showers | 15 mph WSW | 10% |
| Tonight | 49°F | Slight Chance Rain Showers then Slight Chance Rain | 15 mph SW | 16% |
| Thursday | 54°F | Mostly Cloudy then Chance Rain | 10 to 15 mph WSW | 52% |
| Thursday Night | 41°F | Rain Likely then Cloudy | 10 mph NNW | 57% |
| Friday | 50°F | Partly Sunny | 10 to 15 mph NNW | 6% |
| Friday Night | 36°F | Partly Cloudy | 5 to 10 mph NNW | 2% |
| Saturday | 51°F | Sunny | 5 mph NW | 0% |
| Saturday Night | 36°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 57°F | Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 38°F | Mostly Clear | 5 mph W | 0% |
| Monday | 61°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 43°F | Mostly Clear | 5 to 10 mph WSW | 0% |
| Tuesday | 61°F | Sunny | 5 mph WNW | 0% |
| Tuesday Night | 42°F | Partly Cloudy | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for McCook (41.798, -87.842). Updated through the day.
Growing snapshot for McCook
Last spring frost
Apr 11
First fall frost
Oct 31
Growing season
201 days
Hardiness zone
6a
More local growing data for McCook: nearby ZIP 60534 weather · frost dates · planting calendar · Illinois frost dates
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Chicago
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Climate data from the nearest NOAA station, Chicago Midway Ap, Il (3.9 mi from McCook). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.