ded

This was somewhat annoying because all the other requirements were given in number, whereas the "sunny" was not given in number and was given as "it's more likely to rain than not." aka 0.5. I understand what you're trying to do, but it was just annoying. It wasn't helpful that your example was when it was sunny at 0.40 should return false. Again I understood your reasoning, you want people to think and read carefully, but inconsistency is not cool.

I couldn't figure out what they meant by throw error because I was returning "error" and that didn't work, so if you're having difficulties with that, write in
throw 'Error';

This was a pain in the butt! It wasn't hard but it was still a pain! Good job tho.

me likey!

Me likey.

I really liked this kata, so much I had to comment on how much I liked it! :D