Prospection is associated, in varying degrees, with a sense that imagined events will (or will not) happen in the future--referred to as "belief in future occurrence." The present research investigated to what extent this belief is justified and predicts the actual occurrence of events in the future. In two studies, participants rated their belief in the future occurrence of events imagined to happen in the coming month (Study 1) or week (Study 2), and the actual occurrence of events was then assessed. Results showed that the odds of event occurrence were about 2 times higher with an increase of 1 unit on the belief scale. Belief was particularly pronounced for temporally close events and was largely determined by the congruence of events with autobiographical knowledge. These results suggest that belief in future occurrence has some truth value and may inform decisions and actions.