My cilantro plant is wilted, will it die if I trim it

Trimming won't make it die. Do you know why it has wilted?

Pictures and more of a description of what's going on would be helpful. Also, don't eat it until you know.

Trim it.
Cilantro is a cool weather crop.
The heat either kills it or makes it bolt, (go to seed).
That's about all I can tell you without knowing where in California you are, your temperatures, or zone.