"what is the word for when the weather reflects your mood"

You're big enough to get you own stamp. But thanks so much for helping

I was taught that it was pathetic fallacy. however, in my own understanding, pathetic fallacy is more like personification.

The correct term IS pathetic fallacy. Shakespeare did it all the time.
Example being that in Macbeth the sky went dark and it was windy and stormy after King Duncan's murder.

Pathetic Fallacy

That is the term on every literary devices/terms list I can find. It doesn't sound right, but Pathetic, relating to pathos and empathy and all that, fits the pathetic act of weather responding to the mood or atmosphere of the characters or events in a literary work.

One possibility is "Objective Correlative."

Its kind of like anthropomorfizing the weather.

amnesia ?

pathetic fallacy

It IS pathetic fallacy. This word has been misconceived to mean PERSONIFICATION, being partially lost in translation. For example, the rain in a scene with a girl who's mother has just died is used to show how the child is feeling. Trust me, I'm an actor. With Aspergers.

Pathetic Fallacy, I know it sounds strange but in English today we discussed it for the topic "conflict", baisically we watched the opening sequence of Saving Private Ryan and spoke about how Steven Spealberg had used horrible, gritty weather during the war flashback to show how awful the mood was. -Pathetic Fallacy.

OBJECTIVE CORRELATE