Climate almanac
Merrillville
Indiana, United States · 41.48°, -87.33°
What is the weather like in Merrillville in August?
In August, Merrillville is typically 81°F (27°C) during the day and 66°F (19°C) at night. The month brings about 3.8 in (98 mm) of precipitation in total.
- Average high81°F (27°C)
- Average low66°F (19°C)
- Precipitation3.8 in (98 mm)
- Clear or mostly clear days13
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)