March in Siedlce averages a daily high of 7°C with nights around -2.5°C. Expect roughly 10.6 wet days totalling 26.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Siedlce is May–September.
Based on SIEDLCE, PL (9.5km), 1995–2024. 29 years of March data.