Climate almanac
Sejny
Podlasie, Poland · 54.11°, 23.35°
What is the weather like in Sejny in December?
In December, Sejny is typically 35°F (2°C) during the day and 30°F (-1°C) at night. The month brings about 2.0 in (52 mm) of precipitation in total. Snowfall averages about 5.4 in (137 mm) over the month.
- Average high35°F (2°C)
- Average low30°F (-1°C)
- Precipitation2.0 in (52 mm)
- Clear or mostly clear days1
- Snowfall5.4 in (137 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)