Leonore, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leonore, a village in Lasalle County, Illinois.
This Afternoon
62°F
Slight Chance Rain Showers
A slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 62, with temperatures falling to around 55 in the afternoon. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast for Leonore
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 62°F | Slight Chance Rain Showers | 10 to 15 mph WSW | 10% |
| Tonight | 46°F | Slight Chance Rain Showers then Cloudy | 10 to 15 mph SW | 7% |
| Thursday | 56°F | Mostly Cloudy then Chance Rain | 10 to 15 mph WSW | 41% |
| Thursday Night | 40°F | Chance Rain then Mostly Cloudy | 5 to 10 mph NNW | 31% |
| Friday | 50°F | Partly Sunny | 5 to 10 mph N | 2% |
| Friday Night | 31°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 0 to 5 mph W | 0% |
| Sunday | 58°F | Sunny | 5 to 10 mph W | 0% |
| Sunday Night | 35°F | Mostly Clear | 0 to 5 mph W | 0% |
| Monday | 63°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 40°F | Clear | 5 mph WSW | 0% |
| Tuesday | 63°F | Sunny | 0 to 5 mph WNW | 1% |
| Tuesday Night | 39°F | Partly Cloudy | 0 mph | 2% |
Forecast source: National Weather Service (api.weather.gov) for Leonore (41.189, -88.982). Updated through the day.
Growing snapshot for Leonore
Last spring frost
Apr 20
First fall frost
Oct 22
Growing season
183 days
Hardiness zone
5b
More local growing data for Leonore: nearby ZIP 61332 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cedar Point
Dana
Dayton
Earlville
Grand Ridge
Harding
Kangley
LaSalle
Leland
Lostant
Marseilles
Mendota
Millington
Naplate
Newark
North Utica
Oglesby
Ottawa
Peru
Ransom
Rutland
Seneca
Serena
Sheridan
Streator
Tonica
Triumph
Troy Grove
Wedron
Wenona
Climate data from the nearest NOAA station, Ottawa 5Sw, Il (10.4 mi from Leonore). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.