Stockholm's weather is characterized by cold winters, with January and February averaging around 0°C and -1°C respectively, and occasional drops below -10°C. Spring brings mild temperatures, with March and April warming up to averages of 3°C and 4°C, while May sees a significant increase to an average high of 9°C. Summers are warm but not hot, with June and July averaging around 17°C and 20°C respectively, and August slightly cooler at 16°C. Autumn is cool again, with September and October averaging around 13°C and 9°C, before dropping back down to winter-like temperatures in November and December.