1923 Napa Valley Vintage

Cool and normal season, compared with 1991 to 2020. Prohibition years. Few wines were made for sale. Nearest notable vintage: 1920.

Weather and season

Apr to Oct average temperature	60.2°F
Estimated growing degree days	2180
Frost days, Mar to Apr	2
Days 90°F and up, Aug to Oct	10
Winter rain	17.3 in
Spring rain	4.9 in
Harvest rain	0.9 in

Station: south valley. Growing degree days are estimated from monthly means.