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May Weather in Superior, United States

Last updated: June 24, 2025

In May, the average temperature in Superior, United States hovers around 8°C (47°F). Expect a minimum drop to -1°C (30°F) and a pleasant maximum reaching 26°C (79°F). During this month, you'll experience 94 mm (3.7 in) of precipitation spread across approximately 11 days, contributing to an average humidity of 76%. Keep an umbrella handy!

May Temperature in Superior

In May in Superior, the average temperature is 8°C (47°F), with maximums reaching 26°C (79°F) and minimums dropping as low as -1°C (30°F). This variation makes it a great time to pack layers and enjoy both mild days and cooler evenings while exploring.

May Weather in Superior: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Superior, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Superior, May typically has an average temperature of 8°C (47°F), with highs reaching up to 26°C (79°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec141427354758666762483323
Data source: Temperature data for Superior generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Superior

In Superior in May, the precipitation amount is 94 mm (3.7 in) over the course of 11 days.

May Precipitation Trends in Superior

The chart displays monthly precipitation patterns in Superior, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Superior, May typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec253453749476961091191535267
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Superior

In Superior in May, humidity is 76%. With an average temperature of 8°C (47°F), this humidity feels like traveling through a thick, damp blanket that clings to your skin, making every stroll feel heavier and more exhausting than it should.

May Average Humidity in Superior

This chart illustrates the average monthly humidity levels in Superior, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Superior is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%89%85%76%71%70%71%73%82%88%91%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Superior

In Superior in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Superior.

Maximum UV Index Levels in Superior for May

The chart shows the monthly maximum UV Index (UVI) for Superior in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Superior typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234789987532
Data source: Superior May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Superior Compares to Other Months

Weather in Superior varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Superior, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Superior, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)25 mm (1.0 inches)93%low
February Weather-10°C (14°F)33 mm (1.3 inches)93%moderate
March Weather-3°C (28°F)53 mm (2.1 inches)89%moderate
April Weather2°C (35°F)74 mm (2.9 inches)85%high
May Weather8°C (47°F)94 mm (3.7 inches)76%very high
June Weather15°C (59°F)76 mm (3.0 inches)71%very high
July Weather19°C (66°F)95 mm (3.8 inches)70%very high
August Weather19°C (67°F)109 mm (4.3 inches)71%very high
September Weather16°C (62°F)119 mm (4.7 inches)73%high
October Weather9°C (48°F)153 mm (6.0 inches)81%moderate
November Weather1°C (34°F)52 mm (2.0 inches)87%moderate
December Weather-5°C (23°F)67 mm (2.6 inches)91%low

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