Kozani's winters are harsh and chilly, with temperatures often dropping below freezing point in January and February. Spring arrives slowly, with March still quite cool but gradually warming up by April, which brings mild temperatures and occasional warm days. Summer is hot and dry, with July and August being the warmest months, while September marks a gentle transition back to autumn. Autumn's arrival brings cooler temperatures, with November and December experiencing frosty mornings and chilly afternoons.