Winters in Dornbirn are cold and sometimes quite harsh, with temperatures often dropping below freezing for most of January and February. As the seasons transition into spring, March and April bring mild temperatures, but still experience occasional frosts. Summers are warm to hot, with June and July averaging above 15°C, while August can be equally pleasant. Autumn is a bit cooler, with September and October experiencing some chilly days, and November and December see a return to winter conditions, with frosty mornings becoming more common again. Overall, the temperature range in Dornbirn is relatively moderate, but winters are still quite cold.