Within hours of picking, Napa Valley fruit is sorted, pressed or crushed, and moved into fermentation, so the work at a winery does not end when the last bin leaves the vineyard. In 2026, the harvest started weeks ahead of a normal year and was expected to finish early too (Visit Napa Valley). As picking winds down at Hill Family Estate, the focus moves from the crush pad to the cellar, where this year’s vintage begins to take shape. If you missed the first part of this series, our look behind the scenes at harvest covers the crush itself.
What Happens to the Grapes After They Come In?
Red grapes go through a de-stemmer, are gently crushed, and are sent to a vessel to ferment on their skins, while white grapes are pressed whole to release their juice (Napa Valley Vintners). The handoff is quick, which is why harvest days run long. Once the tanks are filled, the work shifts from moving fruit to watching it.
White wines follow a different path. Light whites such as Sauvignon Blanc ferment at cool temperatures in stainless steel, while Chardonnay is often barrel fermented and goes through malolactic fermentation, which adds creamy notes. Barrel-fermented Chardonnay may also be stirred on its lees in barrel for about a year, followed by a settling period before bottling (Napa Valley Vintners).
That shift is the part of the year most guests do not see. A bottle of wine is poured months or years after harvest, and almost all of that time is spent in the cellar, not the vineyard.
What Does Fermentation Look Like Day to Day?
Fermentation is yeast converting sugar-laden grape juice into wine, and high-tannin reds like Cabernet Sauvignon often spend additional time on their skins after fermentation finishes. It is daily judgment, not a timer. One Napa Valley producer told the Napa Valley Register this fall that it cut pump-overs from two a day to one as the tannins developed (Napa Valley Register). Choices like that change from vintage to vintage, which is part of why two vintages of the same wine can taste different.
How Long Does Red Wine Age in Barrel?
Aging red wine in oak for 18 to 24 months is not uncommon in Napa Valley. Bottling timelines are decided wine by wine, depending on the vintage and the character of the wine (Napa Valley Vintners). The grapes picked this fall are now becoming the 2026 vintage, and most of that wine’s story from here plays out in the cellar rather than on the crush pad.
Timelines differ from wine to wine, and our team is glad to talk about how a particular wine is being handled when you visit.
Who Is Working in the Cellar After Harvest?
At Hill Family Estate, the people who farm the vineyards, make the wine, and pour your flight work as one team, and that does not change when crush ends. We are a family winery, not a corporate operation, and you can ask the people doing the work what is happening in the cellar.
Our winery visit page invites guests to learn more about our winemaking process firsthand. To see who you might talk with, meet our team on our website.
What can you ask our team about the cellar?
Good questions make the conversation easier, and no question is too basic. A few to start with:
- How does this year’s fruit taste compared with last year’s?
- What is the difference between how a red and a white wine is handled after harvest?
- Which wines are headed to barrel, and which are headed to tank?
- What changes in the cellar from one vintage to the next?
Why Is Fall a Good Time to Visit After Harvest?
Our winery visit page describes September through November as one of the most pleasant seasons to visit Napa Valley. As picking winds down, this year’s fruit is moving through the cellar, and a visit lets you taste what came before it while hearing how this year is developing.
Fall is also the season to meet the makers. At Hill Family Estate, you will not find a corporate tasting script or a rotating cast of strangers. The people who farm our vineyards, work the cellar, and pour your flight are part of one family winery team, and you can talk with them directly about what they are doing right now. Ask how the fruit tasted when it came in, how the tanks are developing, or what happens next, and you will hear it from people who are close to the work.
Crush runs on the fruit’s timeline, so the timing of your visit matters. If you visit while picking is still winding down, you may see and hear crush activity around the winery, such as bins of freshly picked fruit and equipment running. Later in the fall, the work moves indoors to the cellar, and the conversation moves with it. Either way, you are visiting a working winery, not a staged one.
There is no rush here. Settle in with a flight of estate wines, ask questions at your own pace, and let the conversation go where you are curious.
How Do You Plan a Fall Visit to the Estate Winery?
The Estate Winery is open daily by appointment, with tastings at 10:00 a.m., 12:30 p.m., and 3:00 p.m. The tasting fee is $75 per guest and is waived with a three-bottle purchase. Guests must be 21 or older to taste, though children are welcome, and dogs are welcome outdoors on a leash.
Because the Estate Winery is appointment-based, we recommend booking ahead. [Reserve a Winery Visit] to plan your trip and ask our team what the cellar is up to this fall.
Frequently Asked Questions
What happens to grapes after harvest?
Red grapes are de-stemmed, gently crushed, and sent to a vessel to ferment on their skins, while white grapes are pressed whole. Fermentation turns the juice into wine, and many reds are then aged in oak before bottling. The timeline varies by wine and by vintage.
Is harvest over by October in Napa Valley?
It depends on the year. In 2026, the harvest began weeks ahead of a normal year and was expected to finish early. Timing also varies by grape variety, with white and sparkling grapes picked first and Cabernet Sauvignon among the last.
How long does red wine age in barrel?
Aging red wine in oak for 18 to 24 months is not uncommon in Napa Valley. Timelines vary by wine, by variety, and by the vintage, and each wine is bottled when it is ready rather than on a fixed calendar.
Will I meet the team if I visit after harvest?
Yes, our team is glad to talk with guests about the wines and what is happening in the cellar. Hill Family Estate is a family winery, so the people pouring your flight are part of the team that makes the wine.
Do I need a reservation to visit the Estate Winery in the fall?
Yes. The Estate Winery is open daily by appointment only, with tastings at 10:00 a.m., 12:30 p.m., and 3:00 p.m. Booking ahead is recommended, and appointments are limited.
References:
- Napa Valley Vintners. “The Life Cycle of the Grape.” Undated page, accessed October 8, 2026. https://napavintners.com/napa_valley/
- Visit Napa Valley. “Napa Valley Harvest 2026: Why the Crush Started Early.” August 25, 2026. https://www.visitnapavalley.com/blog/post/napa-valley-harvest-2026-why-the-crush-started-early/
- Napa Valley Register. “Napa Valley’s 2026 Harvest Unfolds at Different Speeds.” September 24, 2026. https://napavalleyregister.com/news/2026-harvest-dispatch-two/article_25badedc-904f-4943-8339-bfe8fbed6ac2.html