What plant hardiness zone is Watford City

Watford City is located at McKenzie County, North Dakota (ND), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Watford City is 4a by the USDA scale.

Coldest zone's winter temperature is −30 … -25 °F.

Plants of 4a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 4a USDA.

Watford City, North Dakota @ wikipedia.