Chicago, IL Weather & Growing Conditions
Today
77°F
Mostly Sunny
Mostly sunny, with a high near 77. South wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Mostly Sunny | 10 mph S | 0% |
| Tonight | 69°F | Mostly Cloudy | 5 to 10 mph S | 14% |
| Wednesday | 78°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 62% |
| Wednesday Night | 68°F | Showers And Thunderstorms | 5 mph W | 91% |
| Thursday | 75°F | Rain Showers | 5 mph N | 77% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph SSE | 28% |
| Friday | 78°F | Mostly Sunny | 5 mph N | 4% |
| Friday Night | 70°F | Mostly Clear | 5 mph S | 9% |
| Saturday | 81°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 15% |
| Saturday Night | 72°F | Slight Chance Showers And Thunderstorms | 10 mph SSW | 19% |
| Sunday | 82°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph SW | 19% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 mph SW | 45% |
| Monday | 81°F | Chance Showers And Thunderstorms | 10 mph SSW | 45% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 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
6b
Explore more for Chicago, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Chicago Northerly Is, Il (2.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.