In September, the weather in the Auvergne-Rhône-Alpes region exhibits a typical blend of late summer warmth and early autumn rains. Temperatures fluctuate, with highs ranging from lower 10s to the upper 20s°C, and lows from single digits to mid-teens. Rain showers are frequent but interspersed with sunny periods and partly cloudy skies. Expect moderate rainfall on some days, but also stretches of dry, sunny weather.
September weather in Auvergne-Rhône-Alpes begins with changeable conditions in Genève, marked by alternating sunny spells and heavy rain showers, with temperatures reaching up to 29°C and lows around 4°C. As the days progress towards Col du Mont-Sion and Frangy, occasional heavy showers give way to more settled weather with highs peaking at 28°C and diminishing precipitation.
In Serrières-en-Chautagne, the sun dominates briefly before heavy showers reappear, while Yenne experiences extended sunny periods punctuated by light rain patches, with highs soaring to 31°C on the warmest days. As Saint-Genix-sur-Guiers and Le Pin transpire, the weather oscillates between sunny intervals and notable showers, maintaining moderate precipitation levels of up to 16 mm.
Towards the middle of the month, as you approach La Côte-Saint-André to Chavanay, expect a mix of sunny, cloudy, and damp days, with peak temperatures ranging from the lower to mid 30s°C. Later stages in Bourg-Argental and Montfaucon-en-Velay are characterized by overcast skies and significant rainfall, occasionally reaching up to 45 mm in Les Sétoux.
Finally, as the trail continues to Saint-Julien-Chapteuil and Le Puy-en-Velay, clear and rainy periods both feature, with rainfall intensifying to approximately 21 mm at times, but warmer days persist with highs near 27°C during sunlit intervals. Overall, September remains a transitional period with unpredictable yet distinct weather patterns across the region.
Would you like me to add a new feature to the app? Or did you notice that something isn't working the way it should? Please Let me know!