Picker Augustine Olvera gets ready to dump a box full of Zinfandel grapes into a bin headed for Galleano Winery on Wednesday, the first day of this year’s grape harvest in Fontana.

There’s never really a bad time for wine tasting, but the beginning of fall seems to bring out the crowds at Mira Loma’s Galleano Winery. “As soon as summer’s over and the weather’s more ...