Timberlane, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Timberlane, a village in Boone County, Illinois.
Tonight
62°F
Showers And Thunderstorms
Showers and thunderstorms before 1am, then patchy fog and showers and thunderstorms between 1am and 4am, then patchy fog and showers and thunderstorms. Cloudy. Low around 62, with temperatures rising to around 64 overnight. East northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast for Timberlane
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Showers And Thunderstorms | 5 to 10 mph ENE | 91% |
| Sunday | 65°F | Rain Showers | 10 to 15 mph NE | 79% |
| Sunday Night | 54°F | Slight Chance Rain Showers | 15 mph NE | 20% |
| Monday | 62°F | Chance Rain Showers | 15 mph ENE | 39% |
| Monday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 50% |
| Tuesday | 60°F | Chance Rain Showers | 10 to 15 mph NE | 50% |
| Tuesday Night | 48°F | Mostly Cloudy | 5 to 10 mph NE | 10% |
| Wednesday | 63°F | Partly Sunny | 10 to 15 mph NE | 6% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 1% |
| Thursday | 66°F | Partly Sunny | 5 mph NE | 8% |
| Thursday Night | 52°F | Mostly Cloudy | 0 to 5 mph NE | 9% |
| Friday | 69°F | Mostly Cloudy | 0 to 5 mph NE | 9% |
| Friday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 8% |
| Saturday | 70°F | Mostly Sunny | 0 to 5 mph ENE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Timberlane (42.336, -88.866). Updated through the day.
Growing snapshot for Timberlane
Last spring frost
May 1
First fall frost
Oct 12
Growing season
162 days
Hardiness zone
5b
More local growing data for Timberlane: nearby ZIP 61011 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Beloit, Wi (10.3 mi from Timberlane). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.