Why is my car overheating?

So, here is how it happened.

I was driving about 10 miles home, and around 6 miles there I noted my temperature was around 250 degrees. So I pulled over and looked around, there was no steaming, I had coolant, no leaking going on. I wasn’t sure if the car felt hotter than normal but it was hot…engines get hot. So anyhow I wasn’t sure what to do I went over to a friend’s house who knows a but about cars, he couldn’t find anything outstanding either. So I left it at his house and he drove me home. I’m really just looking for possible problems and how to see if that’s the real problem. Otherwise I might have a mechanic friend come over, or I’ll take it to the dealer.