There’s actually a scientific reason why the howling breeze sends shivers down our spine. Wind howls when it’s broken up from passing through or around objects, such as trees. The gust of air will split up to move around the tree and then comes back together on the other side. Due to factors such as the surface of the tree and the air speed, one side of the wind is going to be stronger than the other when the currents rejoin. The mixing of the two currents causes vibrations in the air, which produce that ghostly howling noise that gives us the creeps. (These chilling real ghost stories will make you believe they’re real.)
If there are leaves on the trees, they absorb some of the vibrations. That’s why you never hear the wind howling in the middle of summer—only around Halloween when the leaves are falling off the trees, or in the dead of winter. So, the reason everyone finds howling wind so creepy is because it’s associated with the Halloween season when the trees start to become bare, or with the dark, vast, naked forest in winter.
Want to get scared? These Halloween movies are guaranteed the scare you senseless.
[Source: Mental Floss]