MONROE, Ore. — Oregon wineries say this is one the driest harvest seasons on record, but that dry spell is quickly coming to an end. The forecasted rain could hurt this year’s crop.

Most of the vines at Benton-Lane Winery have been picked clean of grapes by now. Staff there have been working night and day to beat the coming rain.

The has been around for 24 years. Its vineyard covers 145 acres, and the owner says it normally takes at least 10 full days to harvest everything. Staff started the picking process a week ago, but with rain in ...