Du Bois, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Du Bois, a village in Washington County, Illinois.
This Afternoon
98°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Sunny. High near 98, with temperatures falling to around 96 in the afternoon. Heat index values as high as 105. South southwest wind around 2 mph. Chance of precipitation is 30%.
7-day forecast for Du Bois
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Chance Showers And Thunderstorms | 2 mph SSW | 26% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph SE | 23% |
| Saturday | 98°F | Sunny | 2 to 7 mph SW | 6% |
| Saturday Night | 72°F | Partly Cloudy | 5 mph SSW | 0% |
| Sunday | 96°F | Mostly Sunny | 3 to 8 mph W | 9% |
| Sunday Night | 67°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph NNE | 35% |
| Monday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph N | 53% |
| Monday Night | 60°F | Chance Showers And Thunderstorms | 6 to 10 mph NNE | 53% |
| Tuesday | 75°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 7 to 13 mph N | 22% |
| Tuesday Night | 55°F | Partly Cloudy | 5 to 13 mph N | 6% |
| Wednesday | 75°F | Mostly Sunny | 6 to 10 mph N | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 2 to 8 mph NNE | 2% |
| Thursday | 76°F | Mostly Sunny | 3 to 9 mph NNE | 1% |
| Thursday Night | 57°F | Partly Cloudy | 2 to 7 mph NNE | 2% |
Forecast source: National Weather Service (api.weather.gov) for Du Bois (38.221, -89.213). Updated through the day.
Growing snapshot for Du Bois
Last spring frost
Apr 7
First fall frost
Oct 26
Growing season
201 days
Hardiness zone
6b
More local growing data for Du Bois: nearby ZIP 62831 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Nashville 1 E, Il (10.5 mi from Du Bois). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.