Frost dates in Harper County, Oklahoma

Misty prairie with an elk on the road in the Wichita Mountains Wildlife Refuge, Oklahoma — Photo: Larry Smith, CC BY 2.0, via Wikimedia Commons

The average last spring frost in Harper County falls Apr 13 and the average first fall frost Oct 25 to Oct 28, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 7a. Places: Buffalo, Rosston. Pick a ZIP for 10% and 90% odds, soil temperature and the 7-day freeze forecast.

ZIP	Place	Last spring frost	First fall frost	Zone
73834	Buffalo	Apr 13	Oct 25	7a
73855	Rosston	Apr 13	Oct 28	7a

Nearby counties

Ellis County Woodward County Beaver County Woods County Dewey County Alfalfa County

All Oklahoma counties · Download Oklahoma frost dates (CSV)

Never miss a frost: get The Dial

Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.

Freeze alerts
Soil-temp heads-up
Weekly yard to-dos

Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.