Climate almanac
Olean
New York, United States · 42.08°, -78.43°
What is the weather like in Olean in December?
In December, Olean is typically 36°F (2°C) during the day and 25°F (-4°C) at night. The month brings about 3.6 in (92 mm) of precipitation in total. Snowfall averages about 11 in (291 mm) over the month.
- Average high36°F (2°C)
- Average low25°F (-4°C)
- Precipitation3.6 in (92 mm)
- Clear or mostly clear days2
- Snowfall11 in (291 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)