By Don Corrigan
Record-setting summer temperatures in 2026 were a gut punch for grape growers throughout the world’s northern hemisphere. Drought and heat in Continental Europe scalded grapes with wine production predicted to be at a 30-year low.
In Missouri Wine Country, the effect of relentless summer sunshine has been less dramatic on vines and ripening fruit. However, wineries do report that uncomfortable temperatures affected crowd sizes coming to their vineyards.
“It has been a rough, extended summer,” said Chuck Gillentine of Defiance Ridge Vineyards. “We had a nice spring, but the heat and humidity have been rough on grapes and customers. The heat is behind us now, so we hope for promising, beautiful days ahead.”
Located just minutes from Chesterfield in St. Louis County on Highway 94, Defiance hosts a month-long Oktoberfest celebration. Temperatures are expected to be higher than average in October, but far lower than the sizzling siege of summer.
After a hot summer, it’s a safe bet that many of the active state wineries are embracing Octoberfest. Augusta and Hermann wineries have always been at the epicenter of Octoberfest wine celebrations in Missouri.
“The heat got pretty intense all too often this summer, and it did keep crowds down. I could see that when I played at some of the local wineries,” said musician Paul Ovaitt. He’s glad Octoberfest is here.









