Leaf River, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leaf River, a village in Ogle County, Illinois.
Overnight
63°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 63. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Leaf River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Showers And Thunderstorms | 10 mph E | 100% |
| Saturday | 78°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SE | 100% |
| Saturday Night | 60°F | Showers And Thunderstorms | 5 to 10 mph E | 92% |
| Sunday | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 to 15 mph NE | 55% |
| Sunday Night | 53°F | Chance Rain Showers | 15 mph NE | 33% |
| Monday | 64°F | Chance Rain Showers | 15 mph ENE | 45% |
| Monday Night | 48°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Tuesday | 62°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph NE | 15% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 15 mph NE | 10% |
| Wednesday | 66°F | Mostly Sunny | 5 to 15 mph NE | 2% |
| Wednesday Night | 48°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Thursday | 67°F | Mostly Sunny | 5 to 10 mph NNE | 4% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 3% |
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.