Webinars have become an important aspect of many extension outreach programs, especially for large research projects that cover wide geographic regions. Evaluation of webinar impact is important to funders and stakeholders alike. Surveys to gather direct and indirect data can be used to evaluate webinars for their overall utility. The results can inform funders of program success and also serve as an indicator of the continued viability of webinar programming for extension audiences. The Northern Grapes Project administered a webinar series on topics related to grape (Vitis sp.) and wine production from 2012 through 2016. Thirty webinars were delivered to an audience of 3083, with nearly an additional 2400 views of recorded webinars. To estimate the value of the series, we modified two models, one that estimated viewer time investment and one that calculated the “green savings.” In addition, we surveyed webinar participants, asking them how much they would pay to watch a live webinar and access the archives, as well as how much money they had earned and/or saved from the information presented. Together, the models and survey indicated a webinar series value of nearly $3.4 million.