Sioux City weather live forecast

Today's maximum temperature in Sioux City is expected to be 88°F. Select a day from the live weather forecast for Sioux City, Iowa, USA for more weather parameters.

5-day weather forecast updated at 04:01 on Friday 12th September 2025 GMT

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The 5-day weather forecast for Iowa (Sioux City) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Sioux City weather forecast by day

Below are the detailed weather forecasts for Sioux City for the next 5 days.

Sioux City weather for Friday 12th September 2025

Expect scattered clouds in Sioux City, Iowa with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 12 mph from the south-east.

  • 88°F maximum temperature88
    °F maximum temperature
  • 70°F minimum temperature70
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 12 mph from the South-East12
    mph wind from SE

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Sioux City weather for Saturday 13th September 2025

Expect scattered clouds in Sioux City, Iowa with a maximum temperature of 91°F, high levels of heat & humidity, maximum UV of 7 (High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 12 mph from the south.

  • 91°F maximum temperature91
    °F maximum temperature
  • 70°F minimum temperature70
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 10 hours of bright sunshine10
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Moderate breeze of 12 mph from the South12
    mph wind from S

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Sioux City weather for Sunday 14th September 2025

Expect isolated thunderstorms in Sioux City, Iowa with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 59% chance of some rain and a moderate breeze of 12 mph from the south.

  • 88°F maximum temperature88
    °F maximum temperature
  • 70°F minimum temperature70
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 59% chance of some rain59
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 12 mph from the South12
    mph wind from S

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Sioux City weather for Monday 15th September 2025

Expect scattered clouds in Sioux City, Iowa with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 6 (High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the south.

  • 86°F maximum temperature86
    °F maximum temperature
  • 66°F minimum temperature66
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 11 mph from the South11
    mph wind from S

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Sioux City weather for Tuesday 16th September 2025

Expect isolated thunderstorms in Sioux City, Iowa with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a gentle breeze of 10 mph from the south.

  • 84°F maximum temperature84
    °F maximum temperature
  • 68°F minimum temperature68
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 52% chance of some rain52
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 10 mph from the South10
    mph wind from S

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