Meteogender (or genderweather) is a fluid gender that changes due to the weather, because emotions associated with the weather affect one’s gender.
For example, one could be a boy when it is sunny, a girl when it is raining, and non-binary when there is a thunderstorm.
History
Meteogender was coined by Tumblr user nonbinary-paradise-blog.[1]
Flag
The meteogender flag was designed by Tumblr user saturnic-vapour.[1]