• Skip to main content
  • Skip to secondary menu
  • Skip to primary sidebar
  • Skip to footer
  • Contact us
  • Wine of the Week newsletter
  • Wine submission guidelines
Great Northwest Wine

Great Northwest Wine

News, reviews and info about the wines of Washington, Oregon, British Columbia and Idaho

  • Home
  • Subscribe to GNWW The Magazine
  • Explore
    • Wine news
    • Grapes and viticulture
    • Washington wine
    • Oregon wine
    • Idaho wine
    • British Columbia wine
    • Product reviews
    • Recipes
    • Podcast
  • Reviews
    • Latest wine reviews
    • Wine of the Week
    • Best Buys
    • Washington wines
    • Oregon wines
    • Idaho wines
    • British Columbia wines
  • Events calendar
    • Submit an event
  • Competitions
    • Cascadia International Wine Competition
    • Idaho Wine & Cider Competition
    • “The Invite” – Great Northwest Invitational Wine Competition
    • Platinum Awards
    • Walla Walla Valley Wine Competition
    • Washington State Wine Competition
  • About us
    • Awards and honors
    • Advertising on Great Northwest Wine
    • Wine submission guidelines
  • e-edition

2018 vintage for Northwest wine growers tracks ahead of hot 2015

June 9, 2018 by Eric Degerman 1 Comment

Vines throughout the Pacific Northwest began the month of June with growing degree days ahead of the record-hot 2015 vintage. (Photo by Richard Duval Images)

McMINNVILLE, Ore. — The hot and early 2015 vintage set records throughout the Pacific Northwest in terms of growing degree days, but spring 2018 is on pace to surpass that year, according to recent climate data.

Linfield College educator Greg Jones, one of the wine world’s leading experts in climate research, summed up the month of May as warmer than normal.

“Temperatures in Oregon, Washington and Idaho in May were 2-6°F above normal in May with major cities experiencing one of their warmest Mays on record,” Jones stated in his most recent Weather and Climate Summary and Forecast.

And a number of the recording stations in Washington, Oregon and Idaho that track weather data indicated the growing degree days on a record trajectory.

“Heat accumulation amounts for four locations that I have tracked for many years in Oregon are all above the 1981-2010 normals for the months of April and May, and are close to or above the GDD that was seen at this same time in both 2015 and 2017,” wrote Jones, who celebrates in August his one-year anniversary in McMinnville as Linfield’s director of the Grace and Ken Evenstad Center for Wine Education.

In fact, last month’s temperatures recorded nationwide by the National Oceanic and Atmospheric Administration made headlines as the warmest May recorded in U.S. history, surpassing the Dust Bowl of 1934.

Walla Walla Valley station reflects record start

Growing degree day accumulations for weather reporting stations in the Walla Walla, Willamette, Umpqua and Rogue valleys for the 2018 vintage through May. (Data from the NOAA National Centers for Environmental Information/Charts by Greg Jones, Linfield College)

In the Walla Walla Valley town of Milton-Freewater, Ore., there were 618 GDD through May 31. At the same stage in the record-hot vintage of 2015, there were 574 cumulative growing degree days.

“Growing degree-days (GDD) over the western U.S. show an April through May that was largely above normal,” Jones wrote. “Wine regions in Idaho, Washington and Oregon have seen GDD running 50-250 units above normal.”

Washington State University’s AgWeatherNet charts growing degree days via its 177 stations across the state as well as parts of Oregon.

Through May 31, there were 704 growing degrees days recorded at the Wahluke Slope station. A year ago, it charted 473 GDD. During the 2015 vintage, it stood at 670 when June began.

At the Benton City station near Red Mountain, there were 691 GDD recorded. A year ago, it read 483 GDD. In 2015, there were 629 GDD.

On Snipes Mountain in the Yakima Valley, there were 655 GDD registered. A year ago, the accumulation stood at 428 GDD. During the blistering 2015 season, it was 612.

The Pullman school’s station in Woodinville collected 332 GDD, compared with 243 GDD last year. Back in 2015, it received 310. In the Columbia Gorge, Oregon’s Hood River County station notched 447 GDD. A year ago, it stood at 292, but in 2015 it stood at 371.

Forecasts call for warmer, drier-than-average summer

The WestWide Drought Tracker indicates the mean precipitation for the month of May 2018 and its departure from the 1981-2010 norm. (Map courtesy of University of Idaho/Desert Research Institute)

In McMinnville, the home of Linfield College and the heart of Willamette Valley’s Pinot Noir territory, there were 344 growing degree days — just off the 2015 mark of 362. However, data from the two Southern Oregon sites used in his report were above the 2015 recordings.

In Roseburg, home to the Fault Line Vineyards and Abacela Winery established by his father, Earl Jones, there were 522 GDD compared to 507 of three years ago. In Medford, not far from the Southern Oregon University campus were Greg Jones worked for two decades, the station charged 554 GDD, five ticks ahead of the 2015 track.

“The seasonal forecast for June through August suggests a strong chance for warmer than average conditions over the western US,” Jones wrote. “The precipitation forecast calls for seasonally dry conditions during the same period, with the PNW likely to be the driest region.”

However, Jones added that climate researchers are not yet predicting the 2018 growing season will be hotter than the 2015 vintage.

“All analog years and forecasts indicate that 2018 is highly likely to end up close to the average heat accumulation of the last five years across the majority of the western U.S.,” he wrote.

Ample snowpack means there are no concerns for irrigators in Washington state, but portions of Oregon might be affected.

“Southern California across into the desert southwest and Four Corners region continue running 20-40% of normal, while central to northern California and much of Oregon have been 60-90% of normal,” Jones wrote. “Washington, northern Idaho, Montana and a small area of the northern Sierra Nevadas continue to show 110-200% greater than average precipitation for the water year.”

This weekend, the weather from the Gulf of Alaska will influence the Pacific Northwest, bringing slightly cooler than average conditions with some minor rain that will slow the growing degree days during the month of June. Forecasts served to warn travelers heading over mountain passes that the snow level could fall to 4,000 feet elevation.

“The precipitation forecast over the next 90 days points to a pretty typical seasonal dry down to slightly drier than average conditions in the PNW, while California is expected to be near average or seasonally dry,” Jones concluded.

Filed Under: News, Oregon wine, Washington wine Tagged With: featured, ticker

About Eric Degerman

Eric is the President and CEO of Great Northwest Wine. He is a journalist with more than 30 years of daily newspaper experience and has been writing about wine since 1998. He co-founded Wine Press Northwest magazine with Andy Perdue and served as its managing editor for a decade. He is a frequent wine judge at international wine competitions throughout North America and orchestrates 10 Northwest competitions each year.

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

  • Facebook
  • Twitter
  • YouTube

Wine of the Week

Maryhill Winery 2019 Proprietor’s Reserve Malbec, Columbia Valley $44

April 4, 2023

Latest Wine Reviews

Tinte Cellars 2020 Malbec, White Bluffs $52

Blooms Winery on Whidbey Island 2016 Malbec, Washington State $32

Page Cellars 2019 Malbec, Columbia Valley $47

Snake River Winery 2021 Estate Malbec, Snake River Valley $20

Harbinger Winery 2017 Malbec, Wahluke Slope $30

Five Star Cellars 2017 Malbec, Walla Walla Valley $40

Wine Cruises & Safaris

Elk Cove Vineyards rafting trip in Idaho

Rhône River winemaker cruise with Passing Time, Doubleback and Avennia

Wine Safari to South Africa with Kerry Shiels of Cote Bonneville

Rob Griffin of Barnard Griffin is famous for his rosé of Sangiovese.

Rhône River wine cruise with Barnard Griffin Winery

Footer

Grapes

Savvy suggestions for Sauvignon Blanc from Walla Walla somm Kaleigh Brook

Malbec in Northwest continues to build on its elevated stature

From Argentina to Washington with Malbec for Juan Muñoz-Oca

Match Maker sidebar: King Estate Winery 2015 Hyland Vineyard Pinot Noir, Willamette Valley, $86

Match Maker sidebar: King Estate Winery 2019 Steiner Block Estate Biodynamic Pinot Gris, Willamette Valley, $28

Food

Match Maker: King Estate Winery rising stars combine for elevated restaurant experience

Match Maker recipe: Corn Agnolotti with Chanterelle Mushroom, Roasted Corn, Black Truffle and Citrus Brown Butter

Match Maker recipe: Beef Ribeye with Uni Butter, Pacific Dulse and Lobster Glace

Match Maker: Thiessen puts his brand on WW with Walla Walla Steak Co.

Match Maker recipe: Chocolate Crémeux Tart with Cocoa Nibs and Hazelnuts

History

Swirl, Sniff & Sip: Bottle conditioning creates wines worth waiting for

The Wine Knows: Wine-related Movies with Industry Intrigue

Mount Pisgah in Polk County rises as Oregon wine industry’s 23rd AVA

Hester Creek Estate Winery: 2023 British Columbia Winery of the Year

Ray’s Boathouse toasts 50 years with Ste. Michelle via historic tasting

© 2023 Great NW Wine. All Rights Reserved.