Interference pattern occurs during the double slit experiment but is is possible to predict an electron's position based on that pattern
The interference pattern gives you an indication of the probability of finding an electron at a particular point on the screen. In that sense, it allow some predictive power: not every location is equally likely. It's like being in a casino, and being told the next number on the roulette wheel will be even. That doesn't mean you can predict the number - but your chances of guessing it just got doubled.