Location almanac
Chill hours in 99721
The short answer
99721 averages 448 chill hours per winter (213–628 across 10 years) in USDA zone 2b.
Climate profile
| Average chill hours | 448 (213–628 across 10 winters) |
|---|---|
| USDA hardiness zone | 2b |
| Last spring frost | typically June 2 – June 17 |
| First fall frost | typically August 11 – September 8 |
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 99721’s chill hours and zone:
Good fit (28)
Chill and zone requirements are comfortably met in 99721.
| Variety | Fruit |
|---|---|
| TropicSweet | Apple |
| Arctic Star | Nectarine |
| Double Delight | Nectarine |
| Panamint | Nectarine |
| Snow Queen | Nectarine |
| August Pride | Peach |
| Babcock | Peach |
| Donut | Peach |
| Eva's Pride | Peach |
| Flordacrest | Peach |
| Flordaprince | Peach |
| Gulfprince | Peach |
| Mid-Pride | Peach |
| Tropic Snow | Peach |
| TropicBeauty | Peach |
| UFGold | Peach |
| UFOne | Peach |
| UFSun | Peach |
| 20th Century | Pear |
| Kieffer | Pear |
| Moonglow | Pear |
| Yoinashi | Pear |
| Hachiya | Persimmon |
| Beauty | Plum |
| Flavor Grenade | Plum |
| Flavor King | Plum |
| Santa Rosa | Plum |
| Satsuma | Plum |
Questions
- How many chill hours does 99721 get?
- 99721 averages 448 chill hours per winter, ranging from 213 to 628 across the last 10 years.
- What hardiness zone is 99721?
- 99721 is in USDA hardiness zone 2b.
Growing fruit trees in 99721? 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