Use joint sealant or idle articles.
Use caulking agent or idle articles. You can use caulking agent to fill these gaps, such as silica gel or other sealants. You can also fill the gap with socks or foam pads. These materials can ensure that these gaps can no longer penetrate.
Redecorate
If your house needs redecorating, you can install a sealing strip between the wall and the window. These strips of cloth can prevent wind and rain from invading the room.
Build a wind and rain window
The wind and rain window is a window installed outside the window. These windows can help prevent water and wind from invading the room. At the same time, they can also prevent cold air from blowing into the room from the window.
Replace the window.
If your window is too old or damaged, you'd better replace it. The new windows can better prevent cold air and rain from entering the room.