How many chill hours does 70815 get?

70815 averages 504 chill hours per winter, ranging from 271 to 629 across the last 10 years.

What hardiness zone is 70815?

70815 is in USDA hardiness zone 9a.

Location almanac

The short answer

70815 averages 504 chill hours per winter (271–629 across 10 years) in USDA zone 9a.

70815 climate
Average chill hours	504 (271–629 across 10 winters)
USDA hardiness zone	9a
Last spring frost	typically January 19 – March 13
First fall frost	typically November 13 – December 27

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 70815’s chill hours and zone:

Chill and zone requirements are comfortably met in 70815.

Show 48 more good fit varieties

Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 70815 get?: 70815 averages 504 chill hours per winter, ranging from 271 to 629 across the last 10 years.
What hardiness zone is 70815?: 70815 is in USDA hardiness zone 9a.

Growing fruit trees in 70815? Get a care calendar anchored to this exact climate, with email reminders.

[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026