Harman US

Itasca, IL Weather & Growing Conditions

Overnight
63°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4am, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy. Low around 63, with temperatures rising to around 65 overnight. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Overnight 63°F Chance Showers And Thunderstorms 10 mph E 89%
Saturday 77°F Showers And Thunderstorms then Showers And Thunderstorms Likely 5 to 10 mph SE 100%
Saturday Night 63°F Showers And Thunderstorms 5 to 10 mph ENE 95%
Sunday 69°F Showers And Thunderstorms Likely 10 to 15 mph NNE 61%
Sunday Night 57°F Chance Rain Showers 15 mph NE 26%
Monday 64°F Chance Rain Showers 15 mph ENE 27%
Monday Night 53°F Slight Chance Rain Showers then Mostly Cloudy 10 to 15 mph ENE 21%
Tuesday 62°F Slight Chance Rain Showers 10 to 15 mph NE 15%
Tuesday Night 53°F Mostly Cloudy 5 to 15 mph NE 9%
Wednesday 64°F Partly Sunny 10 mph NE 14%
Wednesday Night 54°F Mostly Cloudy 5 to 10 mph NNE 5%
Thursday 66°F Partly Sunny 5 to 10 mph NNE 4%
Thursday Night 54°F Mostly Cloudy 5 mph NNE 4%
Friday 70°F Partly Sunny 5 to 10 mph NE 5%

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

Growing snapshot for Itasca, IL

Last spring frost
Apr 16
First fall frost
Oct 28
Growing season
193 days
Hardiness zone
6a

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

Climate data from the nearest NOAA station, Chicago Ohare Intl Ap, Il (4.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.