Hood River Valley, Oregon / Cherry
Total Chill:
2308
(Feb 24)
Day 129 / 183 (71%)
Current Season
Total Chill:
2308
(Feb 24)
Method: Utah Model
Season: Oct 15, 25 - Apr 15, 2026
Key Freeze Dates (32°F)
Last Freeze:
10%: 02-29
50%: 03-22
90%: 04-09
10%: 02-29
50%: 03-22
90%: 04-09
First Freeze:
10%: 10-30
50%: 11-24
90%: 12-16
10%: 10-30
50%: 11-24
90%: 12-16
Chill accumulation tracks the cold exposure needed for dormant fruit trees and plants to break dormancy and bloom properly in spring.
Thresholds mark specific chill values when dormancy requirements are typically met, with crossing dates showing when your season reaches each milestone.
Thresholds & Notes
Dormancy Established
200
Chill Hours
Oct 31, 2025
|
Nov 3, 2022
Leaf drop and cold hardening. Columbia River Gorge winds accelerate dormancy onset.
Mid-Accumulation
500
Chill Hours
Nov 20, 2025
|
Nov 21, 2022
Deep dormancy. Pruning window opens. Scout for bacterial canker on cuts.
Minimum Requirement Met
800
Chill Hours
Dec 3, 2025
|
Dec 16, 2022
Bing Rainier base requirement satisfied. Trees capable of bloom response to sustained warmth.
Full Requirement Met
1000
Chill Hours
Dec 18, 2025
|
Jan 3, 2023
Optimal chill for uniform budbreak and strong fruit set. Dormant oil spray timing window.