Greenville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Greenville, a city in Bond County, Illinois.
This Afternoon
95°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3pm. Sunny, with a high near 95. Heat index values as high as 103. Northeast wind around 2 mph. Chance of precipitation is 30%.
7-day forecast for Greenville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 95°F | Chance Showers And Thunderstorms | 2 mph NE | 26% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SE | 24% |
| Saturday | 96°F | Mostly Sunny | 2 to 6 mph SW | 6% |
| Saturday Night | 71°F | Partly Cloudy | 3 mph S | 3% |
| Sunday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 20% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 7 mph N | 48% |
| Monday | 79°F | Showers And Thunderstorms Likely | 6 to 10 mph NE | 61% |
| Monday Night | 58°F | Showers And Thunderstorms Likely | 6 to 12 mph NE | 61% |
| Tuesday | 72°F | Slight Chance Rain Showers then Partly Sunny | 12 mph N | 24% |
| Tuesday Night | 54°F | Mostly Cloudy | 5 to 12 mph N | 5% |
| Wednesday | 75°F | Mostly Sunny | 6 to 9 mph N | 3% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 8 mph N | 3% |
| Thursday | 76°F | Mostly Sunny | 2 to 8 mph N | 2% |
| Thursday Night | 56°F | Partly Cloudy | 2 to 7 mph N | 2% |
Forecast source: National Weather Service (api.weather.gov) for Greenville (38.887, -89.389). Updated through the day.
Growing snapshot for Greenville
Last spring frost
Apr 10
First fall frost
Oct 24
Growing season
196 days
Hardiness zone
6b
More local growing data for Greenville: nearby ZIP 62246 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Vandalia, Il (18.5 mi from Greenville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.