Location almanac
Chill hours in 99737
The short answer
99737 averages 43 chill hours per winter (7–112 across 10 years) in USDA zone 3a.
Climate profile
| Average chill hours | 43 (7–112 across 10 winters) |
|---|---|
| USDA hardiness zone | 3a |
| Last spring frost | typically June 27 – June 30 |
| First fall frost | typically July 1 – July 14 |
Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.
What grows here
Every variety in our database, checked against 99737’s chill hours and zone:
Good fit (9)
Chill and zone requirements are comfortably met in 99737.
| Variety | Fruit |
|---|---|
| Chestnut Crab | Apple |
| Frostbite | Apple |
| Honeygold | Apple |
| Lodi | Apple |
| Sweet Sixteen | Apple |
| Zestar | Apple |
| Golden Spice | Pear |
| Ure | Pear |
| Alderman | Plum |
Marginal (2)
Possible in a good year or a favorable microclimate — click through for the caveats.
| Variety | Fruit |
|---|---|
| Eva's Pride | Peach |
| UFSun | Peach |
Questions
- How many chill hours does 99737 get?
- 99737 averages 43 chill hours per winter, ranging from 7 to 112 across the last 10 years.
- What hardiness zone is 99737?
- 99737 is in USDA hardiness zone 3a.
Growing fruit trees in 99737? Get a care calendar anchored to this exact climate, with email reminders.
Start My OrchardSources
- [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