New Athens, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Athens, a village in St. Clair County, Illinois.
This Afternoon
73°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 73, with temperatures falling to around 69 in the afternoon. South wind around 18 mph, with gusts as high as 28 mph. Chance of precipitation is 90%.
7-day forecast for New Athens
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Rain | 18 mph S | 91% |
| Tonight | 54°F | Rain | 7 to 14 mph S | 99% |
| Wednesday | 65°F | Mostly Cloudy | 5 to 10 mph SW | 8% |
| Wednesday Night | 43°F | Partly Cloudy | 3 mph SW | 0% |
| Thursday | 68°F | Sunny | 3 to 7 mph W | 1% |
| Thursday Night | 44°F | Mostly Cloudy | 3 mph NW | 7% |
| Friday | 59°F | Mostly Cloudy | 3 to 9 mph NW | 4% |
| Friday Night | 39°F | Partly Cloudy | 5 mph N | 1% |
| Saturday | 56°F | Partly Sunny | 3 mph NW | 0% |
| Saturday Night | 35°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 62°F | Sunny | 1 to 6 mph W | 6% |
| Sunday Night | 36°F | Mostly Clear | 2 mph NW | 5% |
| Monday | 66°F | Sunny | 1 to 6 mph W | 2% |
| Monday Night | 40°F | Mostly Clear | 2 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov) for New Athens (38.319, -89.874). Updated through the day.
Growing snapshot for New Athens
Last spring frost
Apr 12
First fall frost
Oct 20
Growing season
189 days
Hardiness zone
7a
More local growing data for New Athens: nearby ZIP 62264 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Belleville Siu Rsch, Il (14.4 mi from New Athens). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.