Like most California destinations, you can’t go wrong when picking a time of year to visit. The Napa Valley has a beautiful climate, and each season offers something unique. 

At the vineyards, September and October is typically harvest time, although some varieties may be picked through November. Vineyards will be bare from December through February, with new buds returning in March and coming into full bloom by June.

Summer temperatures reach up to around 80 degrees Fahrenheit during the day, and cool off to about 50 in the evenings, so you’ll want to bring a variety of clothes and dress in layers.  

Late fall and winter, sometimes called "Cabernet Season" in The Napa Valley, is a great time to visit and savor the Valley's attractions at an unhurried pace.  Winter highs are usually in the comfortable 60s, with with lows occasionally just below freezing . . . perfect fireplace weather. It's not unusual to have temperatures in the 70s and 80s around the Holidays. The region averages around 200 days of sunshine per year, so you should have plenty of good weather to enjoy the outdoors.