Kootenai County, Idaho
Local growing conditions for Kootenai County: the USDA hardiness zones found here, frost dates, and live weather for communities across the county. Based on 11 ZIP codes in our data.
Hardiness zones in Kootenai County
Kootenai County spans these USDA plant hardiness zones (by number of ZIP codes):
Local weather & frost dates
Open any community in Kootenai County for its live forecast, frost dates, and planting calendar:
Athol 83801
Pinehurst 83810
Coeur d'Alene 83814
Coeur d'Alene 83815
Harrison 83833
Hayden Lake 83835
St. Maries 83842
Post Falls 83854
Rathdrum 83858
Spirit Lake 83869
Rockford Bay 83876
More for Idaho
- Agriculture in Idaho
- Frost dates across Idaho
- 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.