Chicago, IL Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. South wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°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 | 19% |
| Wednesday | 79°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph WSW | 68% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 5 mph NW | 91% |
| Thursday | 76°F | Rain Showers Likely then Slight Chance Showers And Thunderstorms | 5 mph NNE | 71% |
| Thursday Night | 65°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 23% |
| Friday | 79°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Friday Night | 68°F | Mostly Clear | 0 to 5 mph SSE | 9% |
| Saturday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SSW | 15% |
| Saturday Night | 71°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 21% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 21% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 46% |
| Monday | 84°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 46% |
| 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 26
First fall frost
Oct 21
Growing season
176 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 Botanic Garden, Il (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.