Sioux City climate guide: monthly weather averages

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The Sioux City, Iowa climate guide is perfect for planning your holiday. Monthly weather averages give the best indication of what the weather is usually like for every month of the year including figures for temperature, rainfall and sunshine.

Max Day Temperature (°C)

Hours of Sunshine (daily)

Days with some Rainfall

Min Night Temperature (°C)

Hours of Daylight (daily)

Heat & Humidity index

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec
  • Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Monthly Rainfall (mm)

UV index (maximum)

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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Sioux City weather map

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Sioux City weather by month

Check the weather in Sioux City for a particular month by selecting from the list below.

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