Rillieux-la-Pape experiences a temperate climate with distinct seasonal variations. Winters are cold and frosty, with temperatures often below freezing, but can occasionally reach mild highs of around 15°C in January and December. Spring arrives in March, bringing moderate temperatures that gradually warm up to average highs of 25-28°C by May. Summer months from June to August are warm to hot, with temperatures frequently reaching 30-35°C, although July is slightly cooler than August. Autumn returns in September, with temperatures dropping back down to around 10-15°C, setting the stage for another cold winter.