Thing is, my car runs fine when it's in the 70's or low 80's. Once the temps hit 90 here and I've run the car for a while, my temp starts hitting 200-210 depending on how bad traffic is and how long i'm sitting.
First... I hate you. It's in the 30's here and it snowed yesterday.
Second, that temperature isn't all that bad. I have similar temperatures with the A/C running on hot days.
Have you tried a 160 degree thermostat? That won't limit the temperature if there's something wrong, but it does start cooling the engine a little earlier.