Grayson County, Texas
Local growing conditions for Grayson County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 17 ZIP codes in our data.
Hardiness zones in Grayson County
Grayson County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Grayson County for its live forecast, frost dates, and planting calendar:
Denison 75020
Denison 75021
Gunter 75058
Preston 75076
Sherman 75090
Sherman 75092
Bells 75414
Dorchester 75459
Tom Bean 75489
Whitewright 75491
Van Alstyne 75495
Collinsville 76233
Sherwood Shores 76245
Sadler 76264
Southmayd 76268
Tioga 76271
Callisburg 76273
More for Texas
- Agriculture in Texas
- Frost dates across Texas
- 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.