Winters in Billings are extremely cold, with temperatures often dropping below -29°C in February, and average temperatures ranging from 0°C in January to -8°C in February. Spring brings gradual warming, with March temperatures averaging around 5°C and April reaching up to 7°C on average. Summer is warm to hot, with July and June being the warmest months, averaging around 26°C and 23°C respectively. Autumn sees a return to cooler temperatures, with September averaging around 18°C and October dropping back down to around 11°C.