Harman US

Tolono, IL Weather & Growing Conditions

This Afternoon
87°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a high near 87. South wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 87°F Chance Showers And Thunderstorms 7 mph S 49%
Tonight 68°F Mostly Cloudy 6 mph S 13%
Sunday 83°F Partly Sunny then Chance Showers And Thunderstorms 6 to 12 mph N 34%
Sunday Night 59°F Chance Showers And Thunderstorms 13 mph NE 40%
Monday 70°F Showers And Thunderstorms Likely 14 mph NE 66%
Monday Night 54°F Chance Rain Showers 10 to 14 mph ENE 47%
Tuesday 67°F Chance Rain Showers 14 mph NE 45%
Tuesday Night 53°F Slight Chance Rain Showers then Mostly Cloudy 8 to 14 mph NNE 15%
Wednesday 68°F Partly Sunny 10 mph NNE 10%
Wednesday Night 53°F Partly Cloudy 5 to 10 mph NNE 2%
Thursday 72°F Partly Sunny 8 mph NNE 1%
Thursday Night 55°F Mostly Cloudy 7 mph NNE 5%
Friday 75°F Partly Sunny 8 mph NNE 5%
Friday Night 54°F Partly Cloudy 7 mph NE 4%

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

Growing snapshot for Tolono, IL

Last spring frost
Apr 19
First fall frost
Oct 17
Growing season
180 days
Hardiness zone
6a

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

Climate data from the nearest NOAA station, Champaign Willard Ap, Il (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.