Climate almanac
Siilinjärvi
North Savo, Finland · 63.08°, 27.67°
What is the weather like in Siilinjärvi in September?
In September, Siilinjärvi is typically 57°F (14°C) during the day and 46°F (8°C) at night. The month brings about 3.1 in (79 mm) of precipitation in total.
- Average high57°F (14°C)
- Average low46°F (8°C)
- Precipitation3.1 in (79 mm)
- Clear or mostly clear days3
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)