Best year time to visit City of Sioux City

General weather information about City of Sioux City

Average annual temperature is 10.8 °C

Absolute maximum temperature: 38.4 °C

Absolute minimum temperature: -24.6 °C

Number of sunny days: 221 days

Number of rainy days: 116 days

Number of snow days: 28 days

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* Weather data for City of Sioux City United States is based on climate observations for 2026 year

City of Sioux City air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)4.812.620.029.330.933.536.938.435.731.818.611.8
Average daytime temperature (°C)-2.52.27.016.925.729.929.830.227.317.010.85.0
Average temperature (°C)-6.2-4.20.39.918.823.823.724.321.311.95.00.5
Average night temperature (°C)-9.6-8.6-4.14.212.718.018.219.216.37.90.6-3.0
Absolute minimum temperature (°C)-24.6-24.2-12.9-5.72.411.310.212.010.5-6.4-8.5-8.8

City of Sioux City monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.510.611.913.414.615.214.913.912.511.19.89.1
Daylight minimum duration (h)9.09.011.012.014.015.014.013.011.010.09.09.0
Sunshine mean duration (h)4.36.97.89.611.512.912.011.610.17.57.05.3
Precipitation (mm)784133376061957956163358
Sunny days191820161918121918142523
Rainy days5441112121912121546
Snow days767300000212

City of Sioux City - weather forecast by months

City of Sioux City weather in januaryCity of Sioux City weather in februaryCity of Sioux City weather in marchCity of Sioux City weather in aprilCity of Sioux City weather in mayCity of Sioux City weather in juneCity of Sioux City weather in julyCity of Sioux City weather in augustCity of Sioux City weather in septemberCity of Sioux City weather in octoberCity of Sioux City weather in novemberCity of Sioux City weather in december

Best time to visit City of Sioux City:

The best time to visit City of Sioux City during the most sunny months:

  • May — 11.5(h)
  • June — 12.9(h)
  • July — 12.0(h)
  • August — 11.6(h)

The largest precipitation sum in City of Sioux City is at

  • July — 95(mm)
  • October — 163(mm)

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    Frequently asked questions

    When is the best time to visit City of Sioux City?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit City of Sioux City.
    What is the weather like in City of Sioux City?
    See average temperature, rainfall and daylight hours for City of Sioux City by month in the table above.
    How many sunny days does City of Sioux City have?
    The monthly weather statistics above show sunshine and rainfall patterns for City of Sioux City throughout the year.