You’ve probably seen the postcards: golden hills, blazing sun, and people in linen shirts sipping Chardonnay. That’s Napa in July. But honestly? January is where the real magic happens. If you’re looking at the 10 day weather forecast napa california, you might see a lot of gray icons and think about canceling. Don't.
Right now, as of Saturday, January 17, 2026, we’re looking at a classic "Cabernet Season" stretch. The current temperature is sitting at a crisp 60°F. It’s cloudy, sure, but that’s the vibe. The wind is barely a whisper at 4 mph coming from the northeast. It’s the kind of weather that practically begs you to find a fireplace and a heavy red wine.
What’s Actually Happening Over the Next Week?
If you’re planning a trip over the next few days, you're looking at some pretty stable, "sweater weather" conditions. Today, we’re topping out at 63°F with a low of 42°F. It’s cloudy, but the chance of rain is only 10%. Basically, you can walk from the car to the tasting room without an umbrella, but keep a jacket handy.
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Tomorrow, Sunday, January 18, stays almost identical—high of 62°F and mostly cloudy. But here’s the kicker: Monday, January 19, is going to be a total gem. We’re expecting a high of 62°F with full-blown sunny skies and a low of 43°F. If you’ve been waiting for that perfect vineyard photo, Monday is your day. The UV index is low (around 2), so you won't fry, but the light will be gorgeous.
By the middle of the week, things cool off just a hair. Tuesday and Wednesday (January 20-21) will hover around 60°F. It’ll be mostly cloudy, but the rain stays away. Humidity is climbing a bit, reaching up to 75%, which gives the valley that misty, cinematic look in the mornings.
The Weekend Outlook and Beyond
Heading into the following weekend, the temperature starts a slow slide. Thursday and Friday (January 22-23) will see highs of 59°F. It’s going to be partly sunny, which is great for a walk downtown or a quick hike before the afternoon chill sets in.
Saturday, January 24, gets even cooler with a high of 56°F. We might see a slight bump in rain chances—about 15%—but nothing that’s going to wash out your plans. Sunday and Monday (January 25-26) stay in the high 50s.
Then, things get interesting. On Tuesday, January 27, the forecast shows a significant shift. We’re looking at a 65% chance of showers during the day, jumping to 75% rain at night. The high will be 57°F. This is when you really want to be booked into a cozy spot in Calistoga or a mud bath at Indian Springs.
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Why the "Bad" Weather is Actually Good
People obsess over the 10 day weather forecast napa california because they’re afraid of the rain. But locals know that the rain is what brings the mustard flowers. From late January through March, the vineyards aren't just bare sticks; they’re carpeted in brilliant, electric yellow flowers. It’s stunning.
Also, let’s talk crowds. Or rather, the lack of them. In the summer, you’re fighting for a spot at the bar. In January, you’re often chatting directly with the winemaker. It’s unhurried. It’s quiet.
Winter Packing List Essentials
- Layers are non-negotiable: It can be 60°F in the sun and feel like 40°F the second you step into a stone-walled wine cellar.
- Waterproof boots: If you plan on walking the Vine Trail or visiting a farm-to-table spot, things get muddy fast.
- A real coat: Don't just bring a light windbreaker. When that sun dips at 5:12 PM, the temperature drops fast.
Actionable Tips for Your Trip
If the forecast shows rain for your dates, don't sweat it. Book a tasting at a place with a massive fireplace—think Davis Estates or a cave tour where the temperature stays a constant, comfortable 55°F regardless of the storm outside.
Check the "Winter in the Wineries Passport" if you’re heading up toward Calistoga; it’s usually active this time of year and gets you into nearly 20 wineries for a flat fee. It’s the best deal in the valley when the weather is hit-or-miss.
Watch the Monday, January 19 window closely. That transition from cloudy to sunny is when the valley looks its most vibrant. If you’re a photographer or just want the best views, that’s your peak window for the week.
Keep an eye on that Tuesday, January 27 rain. If you’re driving back to SF or Oakland, give yourself extra time—Highway 29 can get a bit slick when the first big showers of the week hit.
The bottom line? Napa in the winter isn't a compromise. It's a different, more intimate version of wine country that most tourists completely miss. Embrace the clouds, grab a glass of Cab, and enjoy the silence.