Mount Prospect experiences a continental climate with distinct seasonal changes. Winters are cold and snowy, with temperatures often below freezing, especially in January and February. Spring arrives slowly, with March marking the beginning of warmer days, but April still sees chilly mornings. Summers are warm to hot, with July and August being the warmest months, while September brings a slight cooldown before autumn sets in. Autumn is mild, with October experiencing pleasant temperatures, followed by cooler November and December.