Harman US

Tolono, IL Weather & Growing Conditions

This Afternoon
76°F
Chance Light Rain
A chance of rain. Partly sunny, with a high near 76. South southeast wind around 20 mph, with gusts as high as 31 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 76°F Chance Light Rain 20 mph SSE 26%
Tonight 56°F Rain 15 to 18 mph S 83%
Wednesday 63°F Chance Light Rain then Mostly Cloudy 12 to 15 mph SSW 28%
Wednesday Night 44°F Mostly Cloudy 9 mph SW 1%
Thursday 62°F Mostly Sunny 9 to 14 mph WSW 3%
Thursday Night 42°F Mostly Cloudy 7 mph WNW 10%
Friday 56°F Slight Chance Light Rain then Mostly Cloudy 6 to 10 mph NNW 17%
Friday Night 36°F Partly Cloudy 5 to 8 mph NNW 6%
Saturday 55°F Mostly Sunny 5 mph NW 2%
Saturday Night 33°F Partly Cloudy 3 mph W 2%
Sunday 60°F Sunny 3 to 9 mph W 11%
Sunday Night 33°F Mostly Clear 6 mph WNW 7%
Monday 64°F Sunny 5 to 10 mph WSW 3%
Monday Night 38°F Mostly Clear 7 mph WSW 1%

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 Nov 4, 2026.