Le Roy, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Le Roy, a city in Mclean County, Illinois.
This Afternoon
72°F
Chance Light Rain
A chance of rain and a slight chance of thunderstorms. Mostly cloudy, with a high near 72. South wind 22 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Le Roy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Chance Light Rain | 22 to 25 mph S | 51% |
| Tonight | 54°F | Light Rain | 16 to 21 mph S | 86% |
| Wednesday | 62°F | Chance Light Rain then Mostly Cloudy | 18 mph SW | 28% |
| Wednesday Night | 44°F | Mostly Cloudy | 12 to 15 mph SW | 5% |
| Thursday | 61°F | Mostly Sunny | 13 to 18 mph WSW | 5% |
| Thursday Night | 41°F | Mostly Cloudy then Slight Chance Light Rain | 6 to 10 mph WNW | 21% |
| Friday | 55°F | Slight Chance Light Rain then Mostly Cloudy | 8 to 14 mph NNW | 18% |
| Friday Night | 34°F | Mostly Cloudy | 5 to 12 mph NNW | 6% |
| Saturday | 54°F | Mostly Sunny | 7 mph WNW | 2% |
| Saturday Night | 32°F | Partly Cloudy | 5 mph W | 3% |
| Sunday | 60°F | Sunny | 5 to 13 mph W | 12% |
| Sunday Night | 33°F | Mostly Clear | 6 to 9 mph WNW | 7% |
| Monday | 64°F | Sunny | 6 to 15 mph WSW | 2% |
| Monday Night | 38°F | Mostly Clear | 7 to 12 mph WSW | 2% |
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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McLean
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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 Nov 3, 2026.