Sumy, Ukraine experiences a continental climate with cold winters and warm summers. Winters are quite harsh, with temperatures often dropping below -20°C in January and February, but occasionally rising above freezing. Spring arrives in March, bringing mild temperatures around the 0°C mark, which gradually increase to around 7°C by April. Summer months of June to August are warm and pleasant, with average highs ranging from 20-23°C, while autumn is generally cool, with temperatures dropping below 5°C by November. Winter returns in December, with temperatures similar to those in January.