Chicago, IL Weather & Growing Conditions
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
| Tonight | 68°F | Mostly Cloudy | 5 mph SSW | 9% |
| Wednesday | 81°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 54% |
| Wednesday Night | 67°F | Showers And Thunderstorms | 0 to 5 mph WSW | 88% |
| Thursday | 77°F | Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph E | 85% |
| Thursday Night | 65°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph ESE | 37% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Friday Night | 66°F | Mostly Clear | 0 to 5 mph S | 8% |
| Saturday | 84°F | Mostly Sunny | 5 mph SSW | 10% |
| Saturday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 17% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 15 mph SW | 17% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 42% |
| Monday | 85°F | Chance Rain Showers | 5 to 10 mph SW | 42% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 48% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Chicago, IL
Last spring frost
Apr 10
First fall frost
Nov 1
Growing season
203 days
Hardiness zone
6a
Explore more for Chicago, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Chicago Midway Ap 3Sw, Il (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.