Stara Zagora's climate is marked by significant temperature fluctuations throughout the year. Winters are cold, with temperatures often dropping below freezing and averaging around 4-6°C in January and December. Spring brings a welcome warmth, with April and May temperatures rising to an average of 10-17°C, while June and July are hot and sunny, with average highs reaching up to 35-39°C. Autumn is mild, but can be quite cool, with October and November temperatures averaging around 9-12°C.