The shooting occurred at an event at the temple around 6:42 p.m. (9:42 p.m. ET) Saturday, Stockton police spokesman Joseph Silva said.
The three male victims – aged 32, 28 and 27 – were taken to hospital with what appeared to be non-life-threatening injuries, Silva said.
Police believe the two suspects, who were still at large on Sunday, are also Sikhs.
“A riot broke out between the suspects and the victims which culminated in an exchange of gunfire,” Silva said.
It is unclear what led to the disruption and the shooting.