Frost dates in Custer County, Colorado

Maroon Bells peaks above a green mountain valley and lake near Aspen, Colorado — Photo: Rhododendrites, CC BY-SA 4.0, via Wikimedia Commons

The average last spring frost in Custer County falls May 5 to Jun 11 and the average first fall frost Sep 9 to Oct 10, depending on the ZIP code (50% odds, 32°F, NOAA 1991–2020 normals). USDA hardiness zone 5b to 6a. Places: Silver Cliff. 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
81252	Silver Cliff	Jun 11	Sep 9	5b
81253		May 5	Oct 10	6a

Nearby counties

Fremont County Pueblo County Huerfano County Saguache County Alamosa County Teller County

All Colorado counties · Download Colorado 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.