Oconee, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oconee, a village in Shelby County, Illinois.
This Afternoon
93°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 103. East northeast wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Oconee
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Slight Chance Showers And Thunderstorms | 5 mph ENE | 22% |
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph ESE | 21% |
| Saturday | 93°F | Mostly Sunny | 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 7 mph NW | 32% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely | 8 mph NE | 59% |
| Monday | 76°F | Showers And Thunderstorms Likely | 7 to 10 mph NE | 64% |
| Monday Night | 56°F | Showers And Thunderstorms Likely | 7 to 12 mph NE | 59% |
| Tuesday | 70°F | Chance Rain Showers then Mostly Cloudy | 10 mph NNE | 33% |
| 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% |
Forecast source: National Weather Service (api.weather.gov) for Oconee (39.286, -89.107). Updated through the day.
Growing snapshot for Oconee
Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
6b
More local growing data for Oconee: nearby ZIP 62553 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cowden
Findlay
Herrick
Lakewood
Moweaqua
Shelbyville
Sigel
Stewardson
Strasburg
Tower Hill
Westervelt
Windsor
Climate data from the nearest NOAA station, Pana, Il (6.8 mi from Oconee). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.