Climate almanac
Olean
New York, United States · 42.08°, -78.43°
What is the weather like in Olean in May?
In May, Olean is typically 67°F (19°C) during the day and 49°F (9°C) at night. The month brings about 4.5 in (115 mm) of precipitation in total. Snowfall averages about 0.5 in (13 mm) over the month.
- Average high67°F (19°C)
- Average low49°F (9°C)
- Precipitation4.5 in (115 mm)
- Clear or mostly clear days7
- Snowfall0.5 in (13 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)