The county’s grape harvest started on July 16th, weeks ahead of anything in recent memory. Kenwood’s own weather record explains why — and warns that the crop will be a small one.
The first wine grapes of the 2026 vintage came off the vine in Sonoma County on Thursday, July 16th — Pinot Noir from Dutton Ranch’s Jewell Vineyard at Graton, bound for Schramsberg’s sparkling wines. Steve Dutton, who has farmed here for four decades, called it the earliest pick of his career. Schramsberg’s viticulturist, Samantha Rubanowitz, was blunter: “This is by far our earliest pick—and completely unexpected.”
A note on the number, because it is being repeated loosely. The phrase attached to this harvest is “earliest in forty years,” and that is a grower’s career, not an archive. Karissa Kruse of Sonoma County Winegrowers says only that it is “the earliest harvest I’ve experienced during my time” with the organisation. Nobody has produced a dated series going back further. It is the earliest in living memory, which is remarkable enough without being dressed up as a statistic.
What happened here, in the valley’s own numbers
The explanation offered countywide is a hot March that pushed bud break early, followed by a cold, wet bloom that ruined pollination. That is a claim we can check locally rather than take on trust, and Kenwood’s weather record confirms both halves of it emphatically.
March 2026 was the warmest in the sixteen-year record at Kenwood, and not narrowly. The average daily high was 75.4°F against a 2011–2025 mean of 62.2°F — thirteen degrees above normal, and a full five degrees above the next-warmest March on the list. The hottest day reached 87.6°F. Vines read temperature as a calendar; a March like that tells them it is April.
Then the bloom window was the wettest in the same record. Between the 1st of April and the 31st of May, Kenwood took 6.60 inches of rain across fourteen wet days, against an average of 2.38 inches over seven and a half. Nearly three times the normal rainfall fell exactly when the flowers needed still, dry weather to set fruit. The result, growers report countywide, is undersized clusters with fewer berries in them.
Those two records together produce the paradox of this vintage: the vines were early, and then they had less fruit to ripen, so they ripened faster still. The Graton grapes hit 20 Brix by July 15th. Tyler Klick of Redwood Empire Vineyard Management put the mechanism in seven words: “The harvest will start early and ripen quickly.”
A small crop
The date is the headline; the tonnage is the story. Schramsberg took twelve tons off the Jewell Vineyard, about 35% below its average. In Alexander Valley, Bret Munselle estimates his Cabernet blocks at “around 50-60% of our historic averages.” From Carneros, Steve Sangiacomo of Sangiacomo Family Vineyards offers the growers’ understatement: “Yields will be on the light side.” Kruse has said she expects the county to come in 35 to 50 per cent lighter than normal.
Set that against a market that was already soft — North Coast growers went into this season with tepid demand and contracts under pressure — and a light crop cuts both ways. Fewer tons at a moment of oversupply is not the disaster it would be in a tight market, and small berries concentrate flavour, which is why the trade’s public line is about quality. For a grower paid by the ton, it is still a thin year.
What it means in Kenwood and Glen Ellen
Our two towns are not where this harvest started, and the reason is what is planted here. The first picks were Pinot Noir and Chardonnay for sparkling wine, out of the Russian River Valley and Carneros, which come in first every year. Of the 37 wineries in Kenwood and Glen Ellen in our directory, the most widely grown grape is Cabernet Sauvignon, on twenty-four of them, followed by Chardonnay and Pinot Noir on twenty-one each, then Syrah and Zinfandel. Cabernet is a late ripener. The valley’s signature harvest is still ahead, and it will be early rather than earliest.
From Sonoma Valley itself, the tone in the growers’ own reporting is calmer than the county headline. Taylor Serres of Serres Ranch describes “mild temperatures, ample soil moisture, and strong canopy growth” through the season — conditions she calls favourable. An early harvest is not automatically a bad one. It is simply one that arrives before the equipment, the crews and the tasting-room calendars expect it.
Practically, for anyone who lives here: the trucks and the night-picking crews are on the roads sooner than usual, and Highway 12 and the smaller lanes will carry gondola traffic through what is normally still high tourist season. Harvest events on the Social Calendar may run ahead of their usual dates; check before you drive.
Sources: the Sonoma Index-Tribune’s account of the first pick (16 July 2026); the Sonoma County Winegrowers’ harvest release (24 July 2026) for grower quotes and yield estimates. The Kenwood weather figures are our own, calculated from the Open-Meteo reanalysis archive for the Kenwood gridpoint, 2011–2026; as we note whenever we print them, there is no ground-level weather station in Kenwood, Glen Ellen or Oakmont, so these are modelled rather than measured. Planting counts are from our winery directory.