Windham County, Connecticut
Local growing conditions for Windham County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 29 ZIP codes in our data.
Hardiness zones in Windham County
Windham County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Windham County for its live forecast, frost dates, and planting calendar:
Mansfield Center 06247
Willimantic 06256
Willimantic 06226
Brooklyn 06234
Mansfield Center 06235
Danielson 06239
Dayville 06241
Witches Woods 06242
Dayville 06243
North Grosvenor Dale 06255
South Woodstock 06258
Quasset Lake 06259
Putnam 06260
Quinebaug 06262
Dayville 06263
South Windham 06264
South Windham 06266
Mechanicsville 06277
Lake Chaffee 06278
South Windham 06280
Lake Bungee 06281
Witches Woods 06282
Plainfield Village 06331
Moosup 06332
More for Connecticut
- Agriculture in Connecticut
- Frost dates across Connecticut
- 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.