Can orchids get too cold?

[butterfly_muse]

Good morning! In the DC Metro area many of us awoke this morning to several inches of snow that just won't stop coming...which is uncharacteristic of late March!

I checked my orchids this morning as I always do and I noticed their leaves were cold and that there's a slight draft near the window. Usually there is not an issue but as you can imagine it's quite cold outside today. This is my first experience having the orchids at home in this type of weather, so I wanted to know if I should move them further inside away from the window? I turned my heater up a few degrees (it was chilly in here anyway) and there's a vent above them so I'm hoping that helps.

Is there anything else I should do? Our household temp is like 68 but I've got no idea what it is over at the window. I am just afraid of them getting too cold.