Winters in Cheyenne are harsh and cold, with temperatures often dropping below -20°C, but occasional warm spells can bring temperatures up to around 15°C. Mornings can be particularly chilly, while afternoons may see a rise in temperature. Spring arrives slowly, with March temperatures still fluctuating between freezing and mild conditions, eventually warming up by April. Summer days are usually warm, with highs sometimes reaching the mid-30s Celsius, but evenings can cool down to around 10°C. Autumn sees temperatures gradually decline, with mornings growing cooler while afternoons remain relatively warm until November, when cold snaps become more frequent again.