Climate almanac
União
Piauí, Brazil · -4.59°, -42.86°
What is the weather like in União in September?
In September, União is typically 98°F (36°C) during the day and 75°F (24°C) at night. The month brings about 0.1 in (2 mm) of precipitation in total.
- Average high98°F (36°C)
- Average low75°F (24°C)
- Precipitation0.1 in (2 mm)
- Clear or mostly clear days23
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)