"Matthew S. Whiting" wrote in message
...

Yes, but where is their thermometer? On the ground near the level of
your plane, or on top of the tower? Makes a lot of difference.

Fair point. At least in my part of the world, reported temps are supposed
to be 2 metre temps (measured about 6 ft above the ground). But as others
have pointed out there may be differences because of the local measurement
environment.

I still think it's well worth making a comparison between your OAT and the
reported temperature. It's not difficult to spot consistent deviations of a
couple of degrees.

Julian Scarfe