Greenfield, IL Weather & Growing Conditions
Today
87°F
Sunny
Sunny, with a high near 87. South wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 6 mph S | 0% |
| Tonight | 65°F | Mostly Clear | 6 mph SE | 0% |
| Wednesday | 87°F | Mostly Sunny then Isolated Showers And Thunderstorms | 6 mph S | 17% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 6 mph S | 84% |
| Thursday | 84°F | Showers And Thunderstorms | 5 mph SW | 84% |
| Thursday Night | 65°F | Slight Chance Showers And Thunderstorms | 3 mph SE | 19% |
| Friday | 85°F | Partly Sunny | 3 mph SW | 10% |
| Friday Night | 66°F | Partly Cloudy then Chance Showers And Thunderstorms | 2 mph S | 26% |
| Saturday | 88°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 mph S | 26% |
| Saturday Night | 70°F | Mostly Clear | 6 mph S | 6% |
| Sunday | 90°F | Sunny | 6 to 9 mph S | 5% |
| Sunday Night | 72°F | Mostly Clear | 8 mph S | 5% |
| Monday | 91°F | Mostly Sunny | 6 to 9 mph SW | 7% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms | 7 mph S | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greenfield, IL
Last spring frost
Apr 13
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6a
Explore more for Greenfield, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, White Hall 1 E, Il (10.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.