I’m felt before known, I arrive without a sound. I soften the cold, Yet melt what once stood firm, I’m not hot, but I convince.

The first part is the star that our planets orbit, the second half is a squared piece of metal or wood that supports a roof. Together, it's the name of a British motorcycle company, and a place where cats love to lay in.

I mostly only come out at night, But also when there is shadow in sight, If lightning strikes me give me plenty of room, If you hear a hiss expect a boom.

Brittle cold fingers Creeping down the eaves, grip tight Quiet! They bristle

I rise without legs and fall without a sound. I rule the day but disappear by night. I make you squint, sweat, and occasionally burn, yet without me, nothing would grow.