Wausau's winters are brutally cold, with temperatures often plummeting below -30°C in January and February. March brings a slight reprieve, but still averages around freezing. As spring arrives, temperatures gradually warm up, reaching the mid-teens by May and soaring into the 20s by June and July, which is also the wettest month of the year. Autumn is mild, with September temperatures hovering just above zero before dropping back down again in November, setting the stage for another cold winter. Overall, Wausau's climate is characterized by a sharp distinction between its frigid winters and warm summers.