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Le Roy, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Le Roy, a city in Mclean County, Illinois.

Today
86°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 86. Southeast wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Le Roy

WhenTempForecastWindPrecip
Today 86°F Chance Showers And Thunderstorms 8 mph SE 47%
Tonight 68°F Chance Showers And Thunderstorms 7 mph SSW 40%
Sunday 77°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 5 to 17 mph N 70%
Sunday Night 57°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 15 to 18 mph NE 62%
Monday 66°F Showers And Thunderstorms Likely 17 to 21 mph ENE 67%
Monday Night 52°F Chance Rain Showers 14 to 21 mph NE 52%
Tuesday 65°F Chance Showers And Thunderstorms 18 mph NE 35%
Tuesday Night 50°F Chance Showers And Thunderstorms then Mostly Cloudy 10 to 20 mph NNE 35%
Wednesday 67°F Mostly Sunny 10 to 15 mph NNE 4%
Wednesday Night 52°F Partly Cloudy 7 to 14 mph NNE 4%
Thursday 70°F Partly Sunny 8 to 12 mph NNE 3%
Thursday Night 53°F Partly Cloudy 6 to 12 mph NNE 3%
Friday 72°F Mostly Sunny 7 to 12 mph NE 3%
Friday Night 52°F Partly Cloudy 6 to 10 mph NE 3%

Forecast source: National Weather Service (api.weather.gov) for Le Roy (40.339, -88.761). Updated through the day.

Growing snapshot for Le Roy

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

More local growing data for Le Roy: nearby ZIP 61752 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Normal 4Ne, Il (17.7 mi from Le Roy). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.