May Weather in Superior, United States

Last updated: June 24, 2025

In May, the average temperature in Superior, United States hovers around 10°C (50°F). Expect a minimum chill of -9°C (17°F) and the occasional warmth peaking at 27°C (81°F). Rain lovers should note 134 mm (5.3 in) of precipitation spread over 16 days, coupled with an average humidity of 66%. Perfect weather for a mix of cozy indoor activities and refreshing outdoor adventures!

May Temperature in Superior

In May in Superior, the average temperature is 10°C (50°F). The maximum can reach 27°C (81°F), while the minimum can drop as low as -9°C (17°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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 10°C (50°F), with highs reaching up to 27°C (81°F) and lows dropping to around -9°C (17°F).

Data source: Temperature data for Superior generated using information from the Copernicus Climate Change Service.

May Precipitation in Superior

In Superior in May, the total precipitation amount is 134 mm (5.3 in), distributed over 16 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 134 mm (5.3 inches) of precipitation spread over approximately 16 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Superior

In Superior in May, humidity is 66%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that clings to your skin, making it necessary to layer up for your travels while also balancing the need for breathable clothing.

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 66%, offering insight into how humid the weather typically is during this month.

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 reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check 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 11, which falls under the extreme exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	25 mm (1.0 inches)	88%	moderate
February Weather	-4°C (26°F)	36 mm (1.4 inches)	87%	high
March Weather	2°C (35°F)	62 mm (2.5 inches)	81%	very high
April Weather	5°C (42°F)	68 mm (2.7 inches)	76%	extreme
May Weather	10°C (50°F)	134 mm (5.3 inches)	66%	extreme
June Weather	17°C (63°F)	74 mm (2.9 inches)	58%	extreme
July Weather	20°C (68°F)	71 mm (2.8 inches)	52%	extreme
August Weather	19°C (67°F)	67 mm (2.7 inches)	56%	extreme
September Weather	16°C (61°F)	42 mm (1.6 inches)	65%	very high
October Weather	7°C (45°F)	48 mm (1.9 inches)	76%	high
November Weather	2°C (36°F)	30 mm (1.2 inches)	82%	moderate
December Weather	-2°C (29°F)	19 mm (0.8 inches)	89%	moderate