I'd like to put my weather station into the polystyrene hermetic case but my concerns are around whether it is going to survive in the sun, heat and frost. The vendor says it is not intended to be used in such conditions and this is probably where I should finish with PS case but I have some of those and want to spend no extra money.
Currently I am testing such case for a week or so and it seems it can stand being frozen to ~-18 deg C., then getting heated to room temperature, wet and then frozen again and again. No cracks, no deformations. What do you think?