Leaf River, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leaf River, a village in Ogle County, Illinois.
This Afternoon
72°F
Slight Chance Rain Showers
A slight chance of rain showers. Partly sunny, with a high near 72. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Leaf River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Slight Chance Rain Showers | 10 mph E | 19% |
| Tonight | 62°F | Slight Chance Rain Showers then Showers And Thunderstorms Likely | 10 mph ESE | 59% |
| Saturday | 78°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SE | 91% |
| Saturday Night | 62°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 to 10 mph N | 76% |
| Sunday | 67°F | Showers And Thunderstorms | 10 to 15 mph NE | 75% |
| Sunday Night | 52°F | Rain Showers Likely | 15 mph NE | 55% |
| Monday | 64°F | Chance Rain Showers | 15 to 20 mph ENE | 44% |
| Monday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 40% |
| Tuesday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 29% |
| Tuesday Night | 46°F | Mostly Cloudy | 5 to 15 mph NE | 8% |
| Wednesday | 66°F | Partly Sunny | 5 to 10 mph NE | 4% |
| Wednesday Night | 48°F | Partly Cloudy | 0 to 10 mph NE | 2% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph NNE | 5% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Leaf River (42.123, -89.404). Updated through the day.
Growing snapshot for Leaf River
Last spring frost
Apr 29
First fall frost
Oct 7
Growing season
161 days
Hardiness zone
5b
More local growing data for Leaf River: nearby ZIP 61047 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Baileyville
Byron
Creston
Davis Junction
Forreston
Hillcrest
Holcomb
Kings
Monroe Center
Mount Morris
Oregon
Polo
Rochelle
Stillman Valley
Climate data from the nearest NOAA station, Polo 5Nw, Il (13.6 mi from Leaf River). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.