Middlesex County, Massachusetts
Local growing conditions for Middlesex County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 81 ZIP codes in our data.
Hardiness zones in Middlesex County
Middlesex County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Middlesex County for its live forecast, frost dates, and planting calendar:
Hanscom AFB 01731
Maynard 01754
Wellesley 01760
Lowell 01854
Fitchburg 01431
Ayer 01432
Groton 01450
Littleton Common 01460
Pepperell 01463
Devens 01464
Townsend 01469
Townsend 01474
Framingham 01701
Framingham 01702
Littleton Common 01718
Littleton Common 01719
West Concord 01720
Framingham 01721
Lexington 01730
Littleton Common 01741
West Concord 01742
Milford 01746
Hopkinton 01748
Hudson 01749
More for Massachusetts
- Agriculture in Massachusetts
- Frost dates across Massachusetts
- USDA hardiness zones explained
- Planting calendar by ZIP code
← All counties in Massachusetts
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.