Sioux City weather in October 2025

Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Sioux City in October. Check more long-term weather averages for Sioux City in October before you book your next holiday to Iowa in 2025/2026.

  • 18°C maximum daytime temperature in October in Sioux City18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 7 days with some rainfall in October in Sioux City7
    7 days with some rainfall
  • 4°C minimum night-time temperature in October in Sioux City4
    4°C min night temperature
  • 11 hours of daylight per day in October in Sioux City11
    11 hours of daylight per day
  • No heat & humidity in October in Sioux City0
    No heat & humidity
  • 49 mm monthly rainfall in October in Sioux City49
    49 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Sioux City4
    4 (Moderate) UV index

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The October weather guide for Iowa (Sioux City) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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

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How hot is it in Sioux City in October?

Daytime temperatures usually reach 18°C in Sioux City in October, falling to 4°C at night.

How sunny is it in Sioux City in October?

There are normally 7 hours of bright sunshine each day in Sioux City in October - that's 61% of daylight hours.

Does it rain in Sioux City in October?

There are usually 7 days with some rain in Sioux City in October and the average monthly rainfall is 49mm.

Sioux City October sunrise & sunset times

Browse the sunrise and sunset times for Sioux City in October 2025. Select a month to view Sioux City sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:23 18:06
Thursday, 16th October 2025 06:40 17:41
Friday, 31st October 2025 06:58 17:19

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