"It's rather cold outside"
I've recently heard this expression in a movie, but I didn't get the meaning of it. I've searched it on the Internet and found that different sites explained its meaning in different ways. I am a little bit confused what the speaker is trying to say using the word "rather"
It could be
"it is a little bit cold outside"
"it is too cold outside"
I think that it mainly depends on the situation when the speaker uses this word. Therefore, I would like to ask what are most common ways of using the word "rather".