I'm assuming these temps were during stop and go traffic?
The temps in my area average around the low to mid 90's during summer (because I live near the Gulf which moderates the temps).
While it may by humid as hell (that doesn't have any affect on cooling), in stop and go traffic, mine would get to 221 briefly, then fall to 205-ish once the fans spin at 218.
Once moving briskly, the temps continue average around 205, but once out of the city and into the country, the temps can fall to 180-190.
In spring, they often hit 179 in the country.
Since your area is averaging 103, I can see where the temps may average a bit higher.
They should not get to 251, which is the critical temp when overheat LED comes on and the temp indicator starts blinking.