Big Horn County, Wyoming
Local growing conditions for Big Horn County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 13 ZIP codes in our data.
Hardiness zones in Big Horn County
Big Horn County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Big Horn County for its live forecast, frost dates, and planting calendar:
Deaver 82421
Burlington 82422
Greybull 82426
Basin 82410
Burlington 82411
Byron 82412
Cowley 82420
Frannie 82423
Hyattville 82428
Lovell 82431
Manderson 82432
Burlington 82434
Shell 82441
More for Wyoming
- Agriculture in Wyoming
- Frost dates across Wyoming
- 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.