March in Kostroma averages a daily high of 0.9°C with nights around -6.5°C. Expect roughly 11.8 wet days totalling 29.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Kostroma is May–August.
Based on KOSTROMA, RS (5.9km), 1995–2024. 26 years of March data.