Oconee, IL Weather & Growing Conditions
Overnight
69°F
Partly Cloudy
Partly cloudy, with a low around 69. Southeast wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Partly Cloudy | 6 mph SE | 6% |
| Saturday | 93°F | Mostly Sunny | 5 to 8 mph SW | 11% |
| Saturday Night | 70°F | Mostly Cloudy | 3 to 7 mph SSW | 11% |
| Sunday | 90°F | Chance Showers And Thunderstorms | 2 to 6 mph NW | 31% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely | 8 mph NE | 58% |
| Monday | 76°F | Showers And Thunderstorms Likely | 9 mph NE | 63% |
| Monday Night | 56°F | Showers And Thunderstorms Likely | 6 to 10 mph NE | 58% |
| Tuesday | 70°F | Chance Rain Showers then Partly Sunny | 10 mph NNE | 32% |
| Tuesday Night | 52°F | Mostly Cloudy | 5 to 10 mph NNE | 5% |
| Wednesday | 73°F | Mostly Sunny | 6 to 9 mph NNE | 3% |
| Wednesday Night | 52°F | Partly Cloudy | 2 to 7 mph NNE | 3% |
| Thursday | 74°F | Mostly Sunny | 3 to 8 mph NNE | 3% |
| Thursday Night | 54°F | Partly Cloudy | 2 to 6 mph NNE | 5% |
| Friday | 75°F | Mostly Sunny | 3 to 7 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Oconee, IL
Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
6b
Explore more for Oconee, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Pana, Il (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.