Harman US

Homer Glen, IL Weather & Growing Conditions

This Afternoon
72°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy, with a high near 72. South wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 72°F Chance Showers And Thunderstorms 5 mph S 49%
Tonight 65°F Chance Showers And Thunderstorms then Showers And Thunderstorms 5 mph SE 100%
Sunday 68°F Showers And Thunderstorms 5 to 15 mph NNE 84%
Sunday Night 56°F Chance Rain Showers 15 mph NE 35%
Monday 64°F Chance Rain Showers 15 mph ENE 43%
Monday Night 53°F Chance Rain Showers 10 to 15 mph ENE 30%
Tuesday 62°F Chance Rain Showers 10 to 15 mph NE 31%
Tuesday Night 53°F Slight Chance Rain Showers then Mostly Cloudy 10 to 15 mph NE 18%
Wednesday 64°F Partly Sunny 10 mph NE 13%
Wednesday Night 53°F Mostly Cloudy 5 to 10 mph NE 6%
Thursday 67°F Partly Sunny 5 to 10 mph NE 3%
Thursday Night 54°F Mostly Cloudy 5 to 10 mph NE 7%
Friday 71°F Partly Sunny 5 to 10 mph NE 7%
Friday Night 54°F Partly Cloudy 0 to 10 mph NE 3%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Homer Glen, IL

Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
184 days
Hardiness zone
6a

Explore more for Homer Glen, IL: full frost dates · planting calendar · Illinois frost dates

Climate data from the nearest NOAA station, Romeoville Wfo, Il (6.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.