New Athens, IL Weather & Growing Conditions
Tonight
71°F
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 71. Southeast wind around 2 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph SE | 19% |
| Saturday | 98°F | Mostly Sunny | 2 to 6 mph SW | 6% |
| Saturday Night | 72°F | Partly Cloudy | 3 mph S | 0% |
| Sunday | 95°F | Mostly Sunny | 5 mph W | 13% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 mph N | 47% |
| Monday | 82°F | Showers And Thunderstorms Likely | 3 to 8 mph N | 62% |
| Monday Night | 60°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 6 to 9 mph N | 62% |
| Tuesday | 72°F | Slight Chance Rain Showers then Partly Sunny | 7 to 10 mph N | 21% |
| Tuesday Night | 54°F | Mostly Cloudy | 5 to 10 mph N | 7% |
| Wednesday | 75°F | Mostly Sunny | 5 to 8 mph N | 3% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 6 mph N | 2% |
| Thursday | 75°F | Mostly Sunny | 2 to 6 mph N | 2% |
| Thursday Night | 57°F | Partly Cloudy | 5 mph N | 2% |
| Friday | 76°F | Mostly Sunny | 2 to 7 mph N | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Athens, IL
Last spring frost
Apr 12
First fall frost
Oct 20
Growing season
189 days
Hardiness zone
7a
Explore more for New Athens, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Belleville Siu Rsch, Il (14.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.