Biala Podlaska's winters are harsh, with temperatures often dropping below -20°C in January and February, but gradually warming up by March. Spring brings mild conditions, with April and May seeing average highs around 10-15°C, while summer is warm to hot, with July being the warmest month at an average high of 22°C. Autumn is generally cool, with temperatures ranging from 0-15°C in September and October, before dropping again into winter. The temperature variations throughout the year are relatively small, but the extreme cold snaps in winter make them stand out.