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Superior (WI) Climate by Month

The temperature in Superior can vary greatly throughout the year. The temperatures shift from warm to very cold. It receives a moderate amount of precipitation. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

Depending on the time of the year, temperatures range from comfortable to very cold in Superior. On average, daytime temperatures range from a comfortable 25°C in July to a very cold -5°C in January. Nighttime temperatures can drop, with averages reaching -15°C in January.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Generally, Superior has a moderate amount of precipitation, averaging 817 mm of rain/snowfall annually. The seasons in Superior, bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 123 mm of precipitation. This rainfall is distributed across 13 rainy days. In contrast, the driest month, January, experiences much less snowfall, totaling 18 mm over 8 snowy days. These distinct seasonal differences provide diverse experiences throughout the year.

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

Sunshine over the year

In Superior, summer days are longer and more sunny, with daily sunshine hours peaking at 10.4 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 3.3 hours.

Monthly hours of sunshine

Data from: Duluth, the United States of America (13 KM, 8 Miles).

Daily hours of sunshine

Data from: Duluth, the United States of America (13 KM, 8 Miles).

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

During the months of July and August 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:
  • Does Superior have a dry season?
    Yes, the months of January and February are very dry.
  • When is winter in Superior?
    The coldest season / winter is in the following months: January, February, March and December.
  • Which is the warmest month in Superior?
    July has an average maximum temperature of 25°C and is the warmest month of the year.
  • Which is the coldest month in Superior?
    The coldest month is January with an average maximum temperature of -5°C.
  • Which is the wettest month in Superior?
    June tops the wettest month list with 123 mm of rainfall.
  • Which is the driest month in Superior?
    January is the driest month with 18 mm of precipitation.
  • Which is the sunniest month in Superior?
    July is the sunniest month with an average of 311 hours of sunshine.

  • 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.

    Forecast for Superior (WI)

    Fri   Nov 22
    5°C | -2°C
    W 14 km/h
    overcast and no rain

    overcast and no rain

    Sat   Nov 23
    3°C | -3°C
    NW 11 km/h
    partly cloudy and no rain

    partly cloudy and no rain

    Sun   Nov 24
    4°C | -4°C
    NE 14 km/h
    1.4 mm
    overcast and  chance of slight rain

    overcast and chance of slight rain