How many chill hours does 58831 get?

58831 averages 1204 chill hours per winter, ranging from 690 to 1360 across the last 10 years.

What hardiness zone is 58831?

58831 is in USDA hardiness zone 4a.

Location almanac

The short answer

58831 averages 1,204 chill hours per winter (690–1,360 across 10 years) in USDA zone 4a.

58831 climate
Average chill hours	1,204 (690–1,360 across 10 winters)
USDA hardiness zone	4a
Last spring frost	typically April 22 – May 19
First fall frost	typically September 28 – October 20

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 58831’s chill hours and zone:

Chill and zone requirements are comfortably met in 58831.

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How many chill hours does 58831 get?: 58831 averages 1204 chill hours per winter, ranging from 690 to 1360 across the last 10 years.
What hardiness zone is 58831?: 58831 is in USDA hardiness zone 4a.

Growing fruit trees in 58831? 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