Johnston County, Oklahoma
Local growing conditions for Johnston County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 10 ZIP codes in our data.
Hardiness zones in Johnston County
Johnston County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Johnston County for its live forecast, frost dates, and planting calendar:
Coleman 73432
Earl 73447
Milburn 73450
Ravia 73455
Tishomingo 73460
Wapanucka 73461
Bromide 74530
Bee 74748
Connerville 74836
Mill Creek 74856
More for Oklahoma
- Agriculture in Oklahoma
- Frost dates across Oklahoma
- 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.