Sioux City weather live forecast

Today's maximum temperature in Sioux City is expected to be 93°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 Sunday 17th August 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 Saturday 16th August 2025

Expect scattered clouds in Sioux City, Iowa with a maximum temperature of 93°F, high levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 11 mph from the south.

  • 93°F maximum temperature93
    °F maximum temperature
  • 75°F minimum temperature75
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    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
  • Gentle breeze of 11 mph from the South11
    mph wind from S

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Sioux City weather for Sunday 17th August 2025

Expect isolated thunderstorms in Sioux City, Iowa with a maximum temperature of 91°F, high levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 33% chance of some rain and a gentle breeze of 9 mph from the south-east.

  • 91°F maximum temperature91
    °F maximum temperature
  • 75°F minimum temperature75
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 33% chance of some rain33
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 9 mph from the South-East9
    mph wind from SE

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Sioux City weather for Monday 18th August 2025

Expect isolated thunderstorms in Sioux City, Iowa with a maximum temperature of 90°F, high levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 36% chance of some rain and a light breeze of 6 mph from the south.

  • 90°F maximum temperature90
    °F maximum temperature
  • 73°F minimum temperature73
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 36% chance of some rain36
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 6 mph from the South6
    mph wind from S

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Sioux City weather for Tuesday 19th August 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 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 18% chance of some rain and a light breeze of 5 mph from the north-east.

  • 84°F maximum temperature84
    °F maximum temperature
  • 68°F minimum temperature68
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 18% chance of some rain18
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 5 mph from the North-East5
    mph wind from NE

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Sioux City weather for Wednesday 20th August 2025

Expect scattered clouds in Sioux City, Iowa with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 5 mph from the east.

  • 82°F maximum temperature82
    °F maximum temperature
  • 64°F minimum temperature64
    °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
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 5 mph from the East5
    mph wind from E

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