October in Petrozavodsk averages a daily high of 6.5°C with nights around 1.7°C. Expect roughly 16.2 wet days totalling 57.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Petrozavodsk is June–August.
Based on PETROZAWODSK, RS (5.5km), 1995–2024. 23 years of October data.