1978 Napa Valley Vintage
Average and wet season, compared with 1991 to 2020. The modern era begins as new wineries open and Cabernet leads. Nearest notable vintage: 1979.
Weather and season
| Apr to Oct average temperature | 65°F |
|---|---|
| Estimated growing degree days | 3210 |
| Frost days, Mar to Apr | 1 |
| Days 90°F and up, Aug to Oct | 19 |
| Winter rain | 28.6 in |
| Spring rain | 9.4 in |
| Harvest rain | 0.8 in |
Station: south valley. Growing degree days are estimated from monthly means.
Notable wines
- Duckhorn Vineyards St. Helena · First vintage