Hello! Welcome to the forum!
When did your tree begin to brown?
Winter and spring "burn" can happen with decreased watering over winter, and with periods of harsh cold and wind alternating with mild temps. There are a few things you can do to help with that.
Water during thaws over winter.
Apply heavy mulch around your cypress. This really helps with water loss.
You can also bag, or wrap your cypress in burlap. I've never actually seen anyone do that, but it was suggested in one of my books.
You can try to trim away that brown foliage. It may come back with regular watering.
Hope that helps some!
USDA Zone 7b/ Sunset Zone 31