Chicago, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chicago, a city in Cook County, Illinois.
Today
76°F
Showers And Thunderstorms then Showers And Thunderstorms Likely
Showers and thunderstorms before noon, then showers and thunderstorms likely. Cloudy. High near 76, with temperatures falling to around 73 in the afternoon. Southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Chicago
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SE | 100% |
| Tonight | 64°F | Showers And Thunderstorms | 5 to 10 mph E | 95% |
| Sunday | 70°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 64% |
| Sunday Night | 57°F | Chance Rain Showers | 15 mph NE | 28% |
| Monday | 66°F | Chance Rain Showers | 15 mph ENE | 25% |
| Monday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph ENE | 19% |
| Tuesday | 64°F | Slight Chance Rain Showers | 15 mph NE | 17% |
| Tuesday Night | 55°F | Mostly Cloudy | 10 to 15 mph NE | 13% |
| Wednesday | 65°F | Slight Chance Rain Showers | 10 to 15 mph NE | 15% |
| Wednesday Night | 55°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Thursday | 66°F | Partly Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 56°F | Mostly Cloudy | 5 to 10 mph NE | 3% |
| Friday | 69°F | Partly Sunny | 5 to 10 mph NE | 3% |
| Friday Night | 57°F | Partly Cloudy | 5 to 10 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Chicago (41.837, -87.685). Updated through the day.
Growing snapshot for Chicago
Last spring frost
Apr 10
First fall frost
Nov 5
Growing season
208 days
Hardiness zone
6a
More local growing data for Chicago: nearby ZIP 60608 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Chicago Northerly Is, Il (3.2 mi from Chicago). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.