Strafford County, New Hampshire
Local growing conditions for Strafford County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 16 ZIP codes in our data.
Hardiness zones in Strafford County
Strafford County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Strafford County for its live forecast, frost dates, and planting calendar:
Dover 03823
Durham 03824
Dover 03820
Rochester 03825
Farmington 03835
Rochester 03839
Milton 03851
Milton Mills 03852
Alton 03855
Durham 03861
Rochester 03867
Rochester 03868
Dover 03869
Somersworth 03878
Rochester 03884
Union 03887
More for New Hampshire
- Agriculture in New Hampshire
- Frost dates across New Hampshire
- USDA hardiness zones explained
- Planting calendar by ZIP code
← All counties in New Hampshire
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.