David Megginson wrote:

How cold was the OAT?

0c when I asked for an altitude change. For most of the flight (including
the same altitude later and elsewhere) it was ranging from 2c to 4c at
3-4000 feet.

[...]
I'm hoping for another nice, cold, clear winter like last one -- once
it gets cold enough, the weather is mostly VMC, and the clouds are ice
crystals when they are present.

Sigh I hate preflighting in the cold.

- Andrew