Almond Blossom Festival, Ripon

Asparagus Festival, Stockton
The last full weekend in April is the Stockton Asparagus Festival.  Check their website for more information.

Civil War Living History Event
Civil War reenactment, mock battles, authentic costumes and camp inspections.
Check their website for the most current schedule.

Lodi Street Faire

Crossroads Street Faire, Manteca
Manteca's Crossroads Street Faire features more than 400 arts and crafts, antiques, food vendors and entertainment.

Pumpkin Maze

Every year, just before Halloween, Dell'Osso Farms has a huge Pumpkin Maze (sometimes mazes).
Directions:
Just West of  Interstate 5, South of Highway 120 and North of Highway 205 in Lathrop.

San Joaquin County Fair, Stockton

Stanislaus County Fair, Turlock

Wine and Chocolate Weekend, Lodi
Look for it in February.  Check their website often for events and dates.