Niort, France experiences a temperate climate with distinct seasonal variations. Winters are cool and occasionally cold, with temperatures often below freezing in January and February, but mild by March. Spring is marked by a steady warming trend, with temperatures rising gradually from April to June. Summer months bring warm to hot conditions, with temperatures frequently reaching the mid-20s to low 30s Celsius, while autumn sees a return to milder weather, with temperatures cooling gradually from September to November.