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Climate almanac

Winthrop Harbor

Illinois, United States · 42.48°, -87.82°

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What is the weather like in Winthrop Harbor in August?

In August, Winthrop Harbor is typically 74°F (23°C) during the day and 68°F (20°C) at night. The month brings about 2.6 in (66 mm) of precipitation in total.

  • Average high74°F (23°C)
  • Average low68°F (20°C)
  • Precipitation2.6 in (66 mm)
  • Clear or mostly clear days14
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)