South Ilion, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Ilion, a community in Herkimer County, New York.
This Afternoon
66°F
Mostly Cloudy
Mostly cloudy, with a high near 66. East wind around 5 mph.
7-day forecast for South Ilion
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Mostly Cloudy | 5 mph E | 0% |
| Tonight | 51°F | Mostly Cloudy then Chance Rain Showers | 5 mph E | 51% |
| Sunday | 63°F | Rain Showers | 6 mph E | 99% |
| Sunday Night | 46°F | Mostly Cloudy | 3 mph N | 7% |
| Monday | 66°F | Partly Sunny | 1 to 5 mph N | 0% |
| Monday Night | 44°F | Mostly Cloudy | 5 mph E | 1% |
| Tuesday | 63°F | Partly Sunny | 2 to 6 mph E | 2% |
| Tuesday Night | 44°F | Mostly Cloudy | 6 mph E | 1% |
| Wednesday | 63°F | Partly Sunny | 5 to 10 mph E | 1% |
| Wednesday Night | 43°F | Partly Cloudy | 8 mph E | 6% |
| Thursday | 61°F | Partly Sunny | 6 to 9 mph E | 12% |
| Thursday Night | 45°F | Mostly Cloudy then Chance Rain Showers | 2 to 6 mph E | 27% |
| Friday | 66°F | Chance Rain Showers | 5 mph NE | 27% |
| Friday Night | 47°F | Chance Rain Showers | 5 mph N | 26% |
Forecast source: National Weather Service (api.weather.gov) for South Ilion (42.994, -75.055). Updated through the day.
Growing snapshot for South Ilion
Last spring frost
May 5
First fall frost
Oct 4
Growing season
151 days
Hardiness zone
5b
More local growing data for South Ilion: nearby ZIP 13357 weather · frost dates · planting calendar · New York frost dates
Nearby towns & communities
Cold Brook
Dolgeville
East Frankfort
East Herkimer
Frankfort
Herkimer
Ilion
Little Falls
Middleville
Mohawk
Newport
Old Forge
Poland
Salisbury Center
Thendara
Climate data from the nearest NOAA station, Little Falls City Rsch, Ny (12.4 mi from South Ilion). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.