Coulterville, IL Weather & Growing Conditions
Overnight
63°F
Clear
Clear. Low around 63, with temperatures rising to around 68 overnight. Northeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Clear | 1 mph NE | 0% |
| Tuesday | 86°F | Sunny | 1 mph ENE | 0% |
| Tuesday Night | 64°F | Mostly Clear | 2 mph SE | 0% |
| Wednesday | 89°F | Sunny | 0 to 3 mph S | 0% |
| Wednesday Night | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 mph S | 38% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 3 mph SSW | 57% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 mph S | 56% |
| Friday | 87°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 2 mph SW | 56% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 mph SSW | 42% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 2 mph SSW | 42% |
| Saturday Night | 70°F | Partly Cloudy | 3 mph S | 11% |
| Sunday | 90°F | Sunny | 6 mph SSW | 7% |
| Sunday Night | 72°F | Mostly Clear | 7 mph S | 5% |
| Monday | 92°F | Sunny | 7 mph SSW | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Coulterville, IL
Last spring frost
Apr 12
First fall frost
Oct 22
Growing season
191 days
Hardiness zone
6b
Explore more for Coulterville, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Sparta 1 W, Il (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.