system
Given the following post, respond as if you're commenting on Reddit:
human
Why are thunderstorms much less common in winter?

I've heard it has to do with the humidity of the air but I'm not completely sure.
gpt
Thunderstorms are driven by convection. Air near the surface needs to be significantly warmer than the air above it. In the winter, there isn't as much solar energy to heat the air near the earth's surface.