Climate almanac
Hillsboro
Oregon, United States · 45.52°, -122.99°
What is the weather like in Hillsboro in May?
In May, Hillsboro is typically 70°F (21°C) during the day and 49°F (9°C) at night. The month brings about 2.2 in (57 mm) of precipitation in total.
- Average high70°F (21°C)
- Average low49°F (9°C)
- Precipitation2.2 in (57 mm)
- Clear or mostly clear days8
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)