Coffeen, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coffeen, a city in Montgomery County, Illinois.
Overnight
55°F
Slight Chance Drizzle
A slight chance of drizzle. Mostly cloudy, with a low around 55. Southwest wind around 10 mph. Chance of precipitation is 20%.
7-day forecast for Coffeen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Slight Chance Drizzle | 10 mph SW | 19% |
| Wednesday | 59°F | Slight Chance Drizzle | 8 to 13 mph W | 16% |
| Wednesday Night | 42°F | Partly Cloudy | 6 mph SW | 1% |
| Thursday | 62°F | Mostly Sunny | 5 to 10 mph W | 0% |
| Thursday Night | 42°F | Mostly Cloudy | 5 mph NW | 1% |
| Friday | 55°F | Partly Sunny | 6 to 10 mph N | 1% |
| Friday Night | 33°F | Partly Cloudy | 1 to 7 mph N | 0% |
| Saturday | 54°F | Mostly Sunny | 3 mph N | 0% |
| Saturday Night | 31°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 58°F | Sunny | 1 to 6 mph NW | 1% |
| Sunday Night | 32°F | Clear | 2 mph NW | 1% |
| Monday | 64°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 37°F | Clear | 2 mph SW | 0% |
| Tuesday | 67°F | Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Coffeen (39.088, -89.390). Updated through the day.
Growing snapshot for Coffeen
Last spring frost
Apr 13
First fall frost
Oct 24
Growing season
192 days
Hardiness zone
6b
More local growing data for Coffeen: nearby ZIP 62017 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Hillsboro, Il (9.4 mi from Coffeen). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.