How hot should my brake rotors get?

[bairjo]

I know this is a Yaris forum, but I just did my wife's Rav4 brakes...new rotors & pads. Shooting a laser at the rotors...any idea how hot front rotors should get?...ball park. I drove around town hitting 40 mph tops applying the brakes often but not real hard. I was getting around 300 degrees F. That seemed a little high. I'm sure if I hit the highway and did some test stops/slowdowns it would be higher. Should I be concerned? Once again, I realize this a Yaris forum but the information I hope to get would be helpful to us Yaris enthusiast. Also, the input from you guys is always much more in depth than the folks over on the Rav4 forum.