October in Siedlce averages a daily high of 13°C with nights around 4°C. Expect roughly 10.4 wet days totalling 40.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Siedlce is May–September.
Based on SIEDLCE, PL (9.5km), 1995–2024. 30 years of October data.