While the Fire-type Pokemon doesn't make an appearance in ... the rules text on the Roaring Flame attack will feature a Fighting Energy symbol instead of the correct Fire Energy symbol.

If you see a tan-and-brown egg with the mega energy symbol appearing above a ... which are: The mega pokemon should be weak to fire attacks. The weather should be sunny (as all fire type attacks ...

The effects of weather on Pokemon spawns are mostly logical. Harsh sunlight brings out more Fire-types ... conditions and a description of the symbols that represent them in the map and Pokedex.