Climate in Sioux City (Iowa), United States of America

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Average monthly minimum and maximum temperature in Sioux City, the United States of America

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Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Average monthly rainfall, snow, precipitation in Sioux City, the United States of America

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Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average monthly rainy days in Sioux City, the United States of America

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Weather Forecasts for Sioux City (IA)

Wed   Feb 21
16°C | -2°C
NE 11 km/h
broken clouds and no rain

broken clouds and no rain

Thu   Feb 22
12°C | 1°C
NW 29 km/h
almost clear and no rain

almost clear and no rain

Fri   Feb 23
9°C | -2°C
NW 32 km/h
partly cloudy and no rain

partly cloudy and no rain

The best time of year to visit Sioux City in the United States of America

During the months of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • When is summer in Sioux City?
    The hottest season / summer takes place in June, July, August and September.
  • Does Sioux City have a dry season?
    Yes, the months of January and November are very dry.
  • When is winter in Sioux City?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Sioux City?
    July has an average maximum temperature of 30°C and is the warmest month of the year.
  • Which is the coldest month in Sioux City?
    The coldest month is January with an average maximum temperature of -1°C.
  • Which is the wettest month in Sioux City?
    June tops the wettest month list with 108 mm of rainfall.
  • Which is the driest month in Sioux City?
    January is the driest month with 13 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.