Hello Quadcammer,
I have been recording my warm up times over the past several days. I really hope I don't piss off some people reading this thread, but here it goes....
I live in Arizona, in the Phoenix area. It has been pretty warm these past several days in the upper 40's and low 50's...Sorry mid west--SUCK IT!!!
On two occasions I started the car in the garage 2 minutes before driving and it took exactly 10 minutes to hit the 180 mark. Than another 2 minutes to reach the peak stable temperature (about one needle width above 180). On another two occasions I started the car and drove right away. Again, same exact results down to the minute.
These times were all consistent over a temperature span of 42 degrees to 54 degrees (OAT).
EDIT: I am using Total Motor Oil 5W40.
So....your car is right in there and sounds like its doing great OR we are both screwed.
Hope this helps!