September in Prato averages a daily high of 9.1°C with nights around 4.6°C. Expect roughly 10.1 wet days totalling 59.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Prato is July–August.
Based on MONTE CIMONE, IT (47.6km), 1995–2024. 12 years of September data.