Adeline, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Adeline, a village in Stephenson County, Illinois.
Tonight
62°F
Slight Chance Rain Showers then Showers And Thunderstorms Likely
A slight chance of rain showers between 11pm and midnight, then showers and thunderstorms likely. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 62. East southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Adeline
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Slight Chance Rain Showers then Showers And Thunderstorms Likely | 10 to 15 mph ESE | 62% |
| Saturday | 78°F | Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SE | 92% |
| Saturday Night | 62°F | Showers And Thunderstorms Likely | 5 to 10 mph NNW | 74% |
| Sunday | 67°F | Showers And Thunderstorms Likely | 10 to 20 mph NE | 74% |
| Sunday Night | 53°F | Chance Rain Showers | 15 mph NE | 53% |
| Monday | 64°F | Chance Rain Showers | 15 to 20 mph ENE | 43% |
| Monday Night | 48°F | Chance Rain Showers | 10 to 20 mph NE | 42% |
| Tuesday | 63°F | Chance Rain Showers | 10 to 15 mph NE | 28% |
| Tuesday Night | 46°F | Mostly Cloudy | 5 to 15 mph NE | 8% |
| Wednesday | 66°F | Mostly 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 | 50°F | Partly Cloudy | 0 to 5 mph NE | 6% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NNE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Adeline (42.141, -89.492). Updated through the day.
Growing snapshot for Adeline
Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
169 days
Hardiness zone
5b
More local growing data for Adeline: nearby ZIP 61039 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cedarville
Dakota
Davis
Freeport
German Valley
Lake Summerset
Lena
Orangeville
Pearl City
Ridott
Rock City
Willow Lake
Winslow
Climate data from the nearest NOAA station, Freeport Waste Wtp, Il (9.2 mi from Adeline). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.