Harman US

Chicago, IL Weather & Growing Conditions

Today
77°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Cloudy. High near 77, with temperatures falling to around 74 in the afternoon. South southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 77°F Showers And Thunderstorms 5 to 10 mph SSE 95%
Tonight 65°F Showers And Thunderstorms 5 to 10 mph SSE 95%
Sunday 70°F Showers And Thunderstorms Likely 10 to 15 mph NNE 65%
Sunday Night 58°F Chance Rain Showers 15 mph NE 34%
Monday 65°F Chance Rain Showers 15 mph ENE 28%
Monday Night 55°F Slight Chance Rain Showers then Mostly Cloudy 10 to 15 mph ENE 18%
Tuesday 63°F Slight Chance Rain Showers 15 mph NE 17%
Tuesday Night 55°F Mostly Cloudy 10 to 15 mph NE 12%
Wednesday 64°F Partly Sunny 10 to 15 mph NE 14%
Wednesday Night 55°F Mostly Cloudy 5 to 10 mph NNE 6%
Thursday 66°F Partly Sunny 5 to 10 mph NNE 3%
Thursday Night 56°F Mostly Cloudy 5 to 10 mph NNE 3%
Friday 70°F Partly Sunny 5 to 10 mph NNE 3%
Friday Night 56°F Partly Cloudy 5 to 10 mph NE 4%

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 (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.