Winters in Waterbury are cold and snowy, with temperatures often dropping below freezing, averaging around -2°C in January and February. Spring brings a gradual warming trend, with March and April temperatures rising to an average of 4°C and 10°C respectively. Summers are mild and warm, with June, July, and August temperatures consistently above 20°C, peaking at 36°C in August. Autumn is characterized by a cooling trend, with September and October temperatures averaging around 18°C and 13°C before dropping back down to winter levels in November and December. The temperature fluctuations throughout the year result in distinct seasonal patterns.