Oregon's winegrape growers want two to three more weeks of warm, sunny weather to boost the sugar content in their winegrapes that has been lagging because of an unusually cool summer.

Cool, wet wether could lead to Botrytis bunch rot, according to a news release.

If it continues raining, the grapes won't gain Brix. If anything, they could lose Brix content as the berries pull in water, which dilutes the sugar.

"If we get three to four days of sun strung together ,we could see a 1 to 2 percent sugar gain," Oregon State University horticultulre specialist Steve Renquist said in the release.