Chicago, IL Weather & Growing Conditions
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph S | 0% |
| Tonight | 70°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 18% |
| Wednesday | 80°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph WSW | 66% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 5 mph WNW | 91% |
| Thursday | 76°F | Rain Showers Likely | 5 mph N | 73% |
| Thursday Night | 65°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 27% |
| Friday | 80°F | Mostly Sunny | 0 to 5 mph SE | 4% |
| Friday Night | 67°F | Mostly Clear | 0 to 5 mph SSE | 9% |
| Saturday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 15% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 20% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 20% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 45% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 45% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 49% |
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 5
Growing season
208 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 Northerly Is, Il (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.