[SHOwnsYou]

Yes.

Weather is a crucial input toward supply.

Supply can be constrained (as in your example) and output will be lower. Lower output can cause decreased profits or any other host of things that can lower stock price.

Another example could be a drought affecting a publicly owned fruit producer.

[spitfire]

To be more direct, weather can affect crop production. Most of which is bought and sold in commodities markets. So if the weather is cold FCOJ is going up.