Harman US

Towanda, IL Weather & Growing Conditions

Tonight
67°F
Mostly Cloudy
Mostly cloudy, with a low around 67. Southeast wind around 10 mph, with gusts as high as 18 mph.

7-day forecast

WhenTempForecastWindPrecip
Tonight 67°F Mostly Cloudy 10 mph SE 13%
Saturday 85°F Chance Showers And Thunderstorms 12 mph S 29%
Saturday Night 67°F Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms 6 to 9 mph ENE 51%
Sunday 78°F Rain Showers Likely 6 to 16 mph NNE 63%
Sunday Night 57°F Showers And Thunderstorms Likely 13 to 16 mph NE 66%
Monday 67°F Showers And Thunderstorms Likely 17 mph ENE 68%
Monday Night 52°F Chance Showers And Thunderstorms 14 to 17 mph NE 50%
Tuesday 66°F Chance Rain Showers 16 mph NE 26%
Tuesday Night 50°F Mostly Cloudy 8 to 15 mph NNE 7%
Wednesday 69°F Partly Sunny 12 mph NNE 4%
Wednesday Night 52°F Partly Cloudy 5 to 12 mph NNE 4%
Thursday 70°F Mostly Sunny 6 to 9 mph NNE 2%
Thursday Night 53°F Partly Cloudy 5 to 8 mph NNE 3%
Friday 72°F Mostly Sunny 5 to 9 mph NNE 4%

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

Growing snapshot for Towanda, IL

Last spring frost
Apr 25
First fall frost
Oct 16
Growing season
172 days
Hardiness zone
6a

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

Climate data from the nearest NOAA station, Normal 4Ne, Il (4.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.