When the wind blows, tree branches wave: that was pretty obvious. It was equally obvious that trees, therefore, cause the wind. That was considerably before TV and 24 hour weather reporting took the mystery out of weather phenoms.
A childhood belief about weather

you weren't the only one
47 of you believed this
- I used to believe that, by moving their branches from one side to another, trees made wind.— Pilar
- I used to believe that wind was created by the trees, that it came out of the ends of their branches. — STeve
- I used to believe wind came from trees. And when it was really windy, the trees were really mad.— Tiffany
- When I was a kid I thought that the wind was caused by the trees fanning their leaves...— GDP
- I used to believe that trees made the wind, but its the wind that blew the trees!— victoria
- when I was very young, I used to beleive that the leaves rustling in the trees made the wind blow— Ellona