Climate almanac
Issaquah
Washington, United States · 47.53°, -122.03°
What is the weather like in Issaquah in August?
In August, Issaquah is typically 77°F (25°C) during the day and 56°F (13°C) at night. The month brings about 1.4 in (35 mm) of precipitation in total.
- Average high77°F (25°C)
- Average low56°F (13°C)
- Precipitation1.4 in (35 mm)
- Clear or mostly clear days15
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)