So the last few days my PSI light keeps on going on, or at least I believe it's that one (the one with the 2 arrows pointing at each other). I just filled my tires like 2 week ago so i dont think they're low. Is this just because of the low temps in my area? Should I be worried?

 

should be 35psi cold (when you haven't been driving)....

a drop in air temps will affect your pressure as well...

 

Or you have a leak in one of the tires.