Wine Weather Intelligence

Willamette Valley vines entered Week 21 in pre-bloom with 355 cumulative GDD and 74 degree-days added over the past week. The forecast ahead is warm and mostly dry, with the season now 57 days old since April 1.

The Willamette Valley enters Week 20 at 256 cumulative GDD with vines in pre-bloom and a seven-day forecast showing no precipitation and consistent warmth. The season is tracking with purpose.

Forty-one days into the 2026 growing season, the Willamette Valley has accumulated 226 GDD through May 11, with a dry, warm week adding 71 of those. The valley is in pre-bloom, and the forecast ahead is mixed — a brief cooling and light rain mid-week before conditions restabilize.

The Willamette Valley closed out Week 18 with a sharp heat spike and stands at 241 cumulative GDD heading into a cooler, dry stretch. The season is 34 days old and sitting firmly in pre-bloom.

The Willamette Valley enters the last days of April with 160 cumulative GDD and a dry week ahead. The season is in pre-bloom, and the forecast pattern deserves attention.

Bud break arrived April 4, and the Willamette Valley has accumulated 124 GDD through April 20. The week ahead brings a mid-week rain event before conditions stabilize into the weekend.

Bud break is confirmed, 72 GDD are on the books, and the valley is moving into a warming week ahead. The season is early and deliberate.

Bud break arrived April 4 in the Willamette Valley, and 54 cumulative GDD through April 8 sets a measured pace for the season. A wet open to the coming week transitions into a dry, warming stretch that will shape the next phase of vine development.

Bud break arrived on April 4, but the week just passed added zero growing degree days and brought a hard freeze. The seven days ahead offer a gradual warm-up that will begin moving the season forward.