Spartanburg's winters are cool and somewhat unpredictable, with temperatures often dipping below freezing but occasionally rising into the mid-teens. As spring arrives, temperatures gradually warm up, reaching their peak in April and May, with average highs around 20-25°C. Summer months bring stable warmth, with July and August being the hottest months, though temperatures rarely exceed 35°C. Autumn is mild, with temperatures cooling down gradually from September to November, before dropping into winter's chill once again.