Climate almanac
Ōmachi
Nagano, Japan · 36.50°, 137.87°
What is the weather like in Ōmachi in December?
In December, Ōmachi is typically 29°F (-1°C) during the day and 17°F (-8°C) at night. The month brings about 8.5 in (217 mm) of precipitation in total. Snowfall averages about 47 in (1206 mm) over the month.
- Average high29°F (-1°C)
- Average low17°F (-8°C)
- Precipitation8.5 in (217 mm)
- Clear or mostly clear days2
- Snowfall47 in (1206 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)