Bonnie, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bonnie, a village in Jefferson County, Illinois.
This Afternoon
100°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Sunny. High near 100, with temperatures falling to around 97 in the afternoon. Heat index values as high as 106. South wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Bonnie
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Slight Chance Showers And Thunderstorms | 5 mph S | 24% |
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 5 mph SE | 24% |
| Saturday | 99°F | Sunny | 2 to 8 mph SSW | 6% |
| Saturday Night | 73°F | Partly Cloudy | 5 mph SSW | 3% |
| Sunday | 97°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph W | 15% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 mph N | 31% |
| Monday | 87°F | Chance Showers And Thunderstorms | 5 to 12 mph NNE | 51% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 6 to 13 mph NNE | 51% |
| Tuesday | 76°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 8 to 13 mph NNE | 28% |
| Tuesday Night | 56°F | Partly Cloudy | 5 to 13 mph NNE | 7% |
| Wednesday | 77°F | Mostly Sunny | 6 to 10 mph N | 3% |
| Wednesday Night | 56°F | Partly Cloudy | 2 to 10 mph NNE | 2% |
| Thursday | 77°F | Mostly Sunny | 3 to 9 mph NNE | 2% |
| Thursday Night | 58°F | Partly Cloudy | 3 to 8 mph NNE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Bonnie (38.203, -88.907). Updated through the day.
Growing snapshot for Bonnie
Last spring frost
Apr 4
First fall frost
Oct 28
Growing season
206 days
Hardiness zone
6b
More local growing data for Bonnie: nearby ZIP 62816 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Benton 2 N, Il (10.8 mi from Bonnie). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.