Huh? Was it supposed to rain?

I woke up and it was raining... I thought it was supposed to rain starting tomorrow, so maybe the forecast was off? Anyway, not too long ago it was so hot at night that I had to open the window to let in some air, but it's suddenly gotten so cold... I quickly swapped out my cool summer mattress pad for a fluffy winter one. It's too cold :(∩◠◠):