Climate almanac
Glen Willow
Pennsylvania, United States · 40.03°, -75.23°
What is the weather like in Glen Willow in May?
In May, Glen Willow is typically 74°F (23°C) during the day and 56°F (13°C) at night. The month brings about 4.5 in (115 mm) of precipitation in total.
- Average high74°F (23°C)
- Average low56°F (13°C)
- Precipitation4.5 in (115 mm)
- Clear or mostly clear days6
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)