Winters in Granollers are mild, with temperatures ranging from around 0°C to 23°C, averaging around 12°C in February. Spring brings a gradual warming trend, with April and May temperatures increasing to an average of 13°C and 17°C respectively. Summer months, June to August, are warm to hot, with highs often reaching above 38°C, while autumn is similar to spring, with mild temperatures and occasional cooler days. In the winter months, temperatures can drop as low as -5°C in January, but this is not typical for most of the season. Overall, temperature fluctuations throughout the year are relatively moderate, except during the peak summer months when highs can soar.