Leonore, IL Weather & Growing Conditions
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South southwest wind around 5 mph, with gusts as high as 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 mph SSW | 1% |
| Tonight | 68°F | Mostly Cloudy | 5 mph S | 11% |
| Wednesday | 82°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 55% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 0 to 5 mph NW | 89% |
| Thursday | 80°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 71% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 25% |
| Friday | 83°F | Mostly Sunny | 0 mph | 9% |
| Friday Night | 65°F | Mostly Clear | 0 to 5 mph SSW | 10% |
| Saturday | 85°F | Mostly Sunny | 5 mph SSW | 8% |
| Saturday Night | 71°F | Mostly Clear | 5 to 10 mph SSW | 8% |
| Sunday | 87°F | Sunny | 10 mph SSW | 10% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph SSW | 25% |
| Monday | 87°F | Chance Showers And Thunderstorms | 10 mph SSW | 25% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 10 mph SW | 36% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Leonore, IL
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
183 days
Hardiness zone
5b
Explore more for Leonore, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Ottawa 5Sw, Il (10.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.