Climate almanac
Grayslake
Illinois, United States · 42.34°, -88.04°
What is the weather like in Grayslake in October?
In October, Grayslake is typically 62°F (17°C) during the day and 49°F (9°C) at night. The month brings about 4.1 in (105 mm) of precipitation in total. Snowfall averages about 0.4 in (11 mm) over the month.
- Average high62°F (17°C)
- Average low49°F (9°C)
- Precipitation4.1 in (105 mm)
- Clear or mostly clear days11
- Snowfall0.4 in (11 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)