After days spent cooped inside, only to be confronted by freezing temperatures just to run an errand, a warm-weather escape is often top of mind in winter and early spring. While many instinctively think of the Caribbean or somewhere tropical, a domestic alternative can be found in one of the country’s most notable wine destinations: Napa Valley—in most cases, just a nonstop flight away from any major U.S. city.
Though Napa’s off season may feel chilly by California standards, temperatures late...