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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

WhenTempForecastWindPrecip
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

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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.