Winter in Northolt is cool and unpredictable, with temperatures often dropping below freezing in January and February. As the seasons transition into spring, March and April bring mild temperatures, but still quite chilly, with occasional spikes above 20°C. May marks the start of warmer weather, with average highs reaching 11°C, while June and July are the warmest months, with temperatures frequently exceeding 25°C. Autumn brings a return to milder conditions in September and October, before cooling down again in November and December. Throughout the year, Northolt's temperature range is relatively narrow, rarely dropping below -4°C or rising above 30°C.