Carthage, IL Weather & Growing Conditions
Tonight
50°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4am. Mostly cloudy. Low around 50, with temperatures rising to around 52 overnight. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Chance Showers And Thunderstorms | 10 to 15 mph SW | 46% |
| Wednesday | 56°F | Mostly Cloudy | 15 mph SW | 13% |
| Wednesday Night | 44°F | Mostly Cloudy | 10 mph SW | 2% |
| Thursday | 56°F | Partly Sunny | 10 to 15 mph W | 12% |
| Thursday Night | 43°F | Mostly Cloudy then Chance Rain Showers | 5 to 10 mph NW | 30% |
| Friday | 54°F | Mostly Cloudy | 10 mph N | 10% |
| Friday Night | 36°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 54°F | Mostly Sunny | 0 to 5 mph NW | 1% |
| Saturday Night | 36°F | Mostly Clear | 0 to 5 mph W | 2% |
| Sunday | 60°F | Sunny | 5 to 10 mph W | 9% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 4% |
| Monday | 64°F | Sunny | 5 to 15 mph SW | 1% |
| Monday Night | 41°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 66°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Carthage, IL
Last spring frost
Apr 13
First fall frost
Oct 22
Growing season
191 days
Hardiness zone
6a
Explore more for Carthage, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Bentley, Il (4.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.