I have purchased a new house, and the sod is being put down today. The
problem is that we're in a cold snap and the weather for the next few
days is supposed to be in the high 20's and low 30's at night. The only
other time I've worked with new sod, I watered it religiously every day
(rightly or wrongly) to help it get established.

I don't know if watering it is the right thing to do, especially in
this cold weather.

BTW, this is centipede grass I'm talking about, and I'm located in
south Mississippi (if that matters).