Growing Conditions Report

The Growing Conditions Report

The Growing Conditions Report (GCR), produced in cooperation with John Duckhorn of Picovale Services, Inc. Austin Peterson of OVID Napa Valley, Chris D’Alo of Nord Vineyard Services, Will Thomas of Foley Family Farms, and Cody Clark of Silverado Farming Company.

The report employs three simple and widely understood climate measurements known to influence grapevine development, ripening, and crop loads: growing degree days (GDD), total frost hours, and rainfall.

The GCR was started in 2010 with the intention of becoming a tool that would allow grape growers to compare conditions across vintages. Over time, a multi-year collection of reports will add to our understanding of regional climate conditions and help to identify climate trends.

The archived reports are available for NVG members as a benefit of membership. They can be found in the Member Portal under Member Resources. If you are not a member and would like access to previous years' reports, please contact [email protected] to inquire about membership.

Read the 2024 GCR