1991 Napa Valley Vintage
Cool season, compared with 1991 to 2020. Modern Napa. Detailed records exist, though not every year is curated here. Nearest notable vintage: 1992.
Weather and season
| Apr to Oct average temperature | 63.9°F |
|---|---|
| Estimated growing degree days | 2970 |
| Frost days, Mar to Apr | 1 |
| Days 90°F and up, Aug to Oct | 15 |
| Winter rain | n/a in |
| Spring rain | 11.1 in |
| Harvest rain | 2.5 in |
Station: south valley. Growing degree days are estimated from monthly means.
Explore 1991 on the interactive timeline