Climate almanac
Siena
Tuscany, Italy · 43.32°, 11.33°
What is the weather like in Siena in January?
In January, Siena is typically 50°F (10°C) during the day and 36°F (2°C) at night. The month brings about 2.2 in (57 mm) of precipitation in total. Snowfall averages about 1.0 in (24 mm) over the month.
- Average high50°F (10°C)
- Average low36°F (2°C)
- Precipitation2.2 in (57 mm)
- Clear or mostly clear days8
- Snowfall1.0 in (24 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)