Typical solutions include putting rugs on the floor.
Colder on floor or window.
Because your problem is created by a lack of room for warm heated air to circulate between the floor joists we have to find a way to allow that to happen while maintaining a proper level of insulation.
Some floor materials are naturally colder than others.
A quick and inexpensive way to make a window refrigerated air conditioner make a room colder.
Some include floor heating in tiles.
Concrete clay or other masonry does a great job of holding heat even if it s colder than we d like.
Tile will be colder than wood or carpet every time.
Hardwood tile and linoleum floors are colder than carpeted ones because the carpeting provides extra insulation on the floors.
If the second floor of your home stays cold in the winter even when the first floor is toasty it may indicate that your home is improperly insulated or ventilated.
Combined with thermal bridging through the floor joists which are almost directly exposed to the cold outside temperatures it will make the floor surface feel cooler than the surrounding floor.