Is my car running too cold?

Tough to say...the factory either sense's or not ....sometimes the readings are wacky, either high or low...That would appear kinda low for a 300 miles trip though...Do all the gages tend to read low also?? volts/oil pressure?? if so you could have a ground issue...even a battery thats old will give wacky readings...I have had both issues...the sensor plug on the intake, next to #5 cyl could be unplugged and see if the connection is kinda junked up...cleaning that could help...or even replace the sensor...its cheap money..
Car seem to run ok??
Not much help but the factory gages are kinda simple...are not really accurate..in the way you see them reading...
 
I am with others - get a real gauge. You could also note if the upper radiator hose is hard and full (wait, I dont mean it like that).

If someone removed gauge needles at some point, who knows again.

When you idle for a bit, does the gauge read hotter?

Good luck.
 
The car runs absolutely perfect. The gauge is probably just off. The other gauges all read fine. I figured it would probably just be the fact that the factory gauges suck ass. Thanks guys.