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Climate almanac

Winfield

Illinois, United States · 41.86°, -88.16°

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What is the weather like in Winfield in September?

In September, Winfield is typically 77°F (25°C) during the day and 58°F (15°C) at night. The month brings about 3.2 in (81 mm) of precipitation in total.

  • Average high77°F (25°C)
  • Average low58°F (15°C)
  • Precipitation3.2 in (81 mm)
  • Clear or mostly clear days13
  • Based on2016-2025 daily ERA5 reanalysis data (10-year normals)