Just spent 6 days in Napa. The weather couldn't have been better with temps in the 70's and crowds were low even on the weekend. We were able to hit up a lot of wineries and came home with 5 cases of wine. Wineries visited were @BlackStallion , @Chappellet , @SilveradoVineyards , @Prisioner , and @Caymus.
If you live in Northern California, and you have driven to Napa to tour the wineries on the fly in the past, be careful. Almost all wineries require reservations as capacity is limited. You may be disappointed if you don't have a reservation. However, if you plan ahead this might be the best time ever to go since the crowds are low and the weather is perfect.
We also had some fantastic meals on our stay. I would recommend @ColesChopHouse , @BistroDonGiovanni , @BistroJeanty and @Boonfly.
One more thing. The best English muffins in the world are at the @ModelBakery . If you are in Napa stop by and pick up a package to bring home. It is over by the @OxbowPublicMarket.