Lyon's winters are typically cool and variable, with temperatures often below freezing in January and February, but occasionally rising into the mid-teens. Spring arrives in March and April, bringing gradually warmer days, with highs sometimes reaching into the mid-twenties. Summer months of June to August are warm and sunny, with temperatures frequently soaring into the thirties, although there can be cooler spells. Autumn is a bit more unpredictable, with September often feeling quite pleasant but October and November experiencing chilly nights and occasional frosts. Winters return in December, with temperatures generally staying below 10°C, except for brief warmer interludes.