Sonoita AVA Climate
Climate not only refers to the long-term average of weather conditions like temperature and precipitation, but also to how such averages vary across and between regions, change over time, and are marked by the occurrence of infrequent yet important events. These components can inform winegrape growers on site and variety suitability, vineyard design and infrastructure, vine growth and yield, as well as potential wine styles for which their fruit may be best.
Growing Season Temperature
Growing Season Temperature is the average temperature from April through October.
Winkler Index
The Winkler Index is based on the accumulation of growing degree days (10°C-based) from April through October.
Huglin Index
The Huglin Index is based on the accumulation of growing degree days (10°C-based) from April through September, adjusted for maximum temperature and daylength.
Biologically Effective Degree Days
Biologically Effective Degree Days are based on the accumulation of growing degree days (10°C-based) from April through October, adjusted for temperature-growth rate, daylength, and diurnal temperature range.
Last Spring Freeze
Last Spring Freeze is the latest occurrence of when the daily minimum temperature is below 32°F (0°C) between January and July.
First Fall Freeze
First Fall Freeze is the earliest occurrence of when the daily minimum temperature is below 32°F (0°C) between August and December.