Cortland County, New York
Local growing conditions for Cortland County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 11 ZIP codes in our data.
Hardiness zones in Cortland County
Cortland County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Cortland County for its live forecast, frost dates, and planting calendar:
McGraw 13040
Munsons Corners 13045
Homer 13077
Homer 13087
McGraw 13101
Tully 13141
DeRuyter 13158
Blodgett Mills 13738
Dryden 13784
Marathon 13803
Smithville Flats 13863
More for New York
- Agriculture in New York
- Frost dates across New York
- USDA hardiness zones explained
- Planting calendar by ZIP code
County growing conditions are compiled from our ZIP-code database, USDA hardiness-zone data, and NOAA climate normals. Conditions vary within a county by elevation and local microclimate. Page updated Aug 4, 2026.