This is a new, stand alone weather. It is not paired to any other weather type and it runs at a constant rate. (meaning it doesn't trigger at a certain time and then stop after a while)
Fireflies weather! Look at em go! awwww~~

So cute <3
Pick a download link below to get this new weather.
mediafire link <-may be preempted by an adfly link because that's just how Forumotion rolls.
MEGA link
FileFactory link <-apparently, this one got adfly'd, too. go figure.
DropBox link
Currently, their spawn is a little bit low. After you've followed the included instructions to install the weather, and you decided you want them to spawn more, find the "emission_rate 40" line inside the weather3 file and change the "40" to any higher number.