1920 Napa Valley Vintage
Weather was normal. The market was not. Prohibition shuts most wineries. A few survive on sacramental wine, and growers sell grapes to home winemakers.
Weather and season
| Apr to Oct average temperature | 61.9°F |
|---|---|
| Estimated growing degree days | 2560 |
| Frost days, Mar to Apr | 11 |
| Days 90°F and up, Aug to Oct | 11 |
| Winter rain | 6.3 in |
| Spring rain | 5.1 in |
| Harvest rain | 2.1 in |
Station: south valley. Growing degree days are estimated from monthly means.
Notable wines
- Beaulieu Vineyard Rutherford