Winters in Lomza are harsh and cold, with temperatures often dropping below -20°C in January and February. However, the coldest months also bring occasional warmer days, sometimes even reaching up to 16°C. Spring arrives slowly, with March and April seeing a gradual warming trend, but still experiencing chilly mornings. Summer is warm and pleasant, with July being the hottest month, while August's temperatures start to cool down again. Autumn brings back cooler temperatures, with September and October having similar temperature ranges as spring, before winter returns with its cold grip in November and December.