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May Weather in Iron River, United States

Last updated: June 24, 2025

In May, the average temperature in Iron River, United States hovers around 12°C (53°F). While it's generally mild, temperatures can swing dramatically—falling as low as -5°C (24°F) and reaching up to 32°C (89°F). Expect an average precipitation of 80 mm (3.2 in) over 11 days, with average humidity levels at a comfortable 77%.

May Temperature in Iron River

In May in Iron River, the average temperature is 12°C (53°F), with maximums reaching 32°C (89°F) and minimums dropping as low as -5°C (24°F). It's essential to pack for a wide range of temperatures when traveling during this time.

May Weather in Iron River: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Iron River, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iron River, May typically has an average temperature of 12°C (53°F), with highs reaching up to 32°C (89°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec151527375364686458442920
Data source: Temperature data for Iron River 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 Iron River

In Iron River in May, the precipitation amount is 80 mm (3.2 in) spread over 11 days.

May Precipitation Trends in Iron River

The chart displays monthly precipitation patterns in Iron River, 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 Iron River, May typically receives around 80 mm (3.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec34514791809498110961095358
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Iron River

In Iron River in May, humidity is 77%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that can make exploration rather uncomfortable, as the moisture in the air clings to your skin and makes even a light breeze feel colder, often requiring additional layers for comfort while traveling.

May Average Humidity in Iron River

This chart illustrates the average monthly humidity levels in Iron River, 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 Iron River is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%87%84%77%75%75%73%78%84%89%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Iron River

In Iron River 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 Iron River.

Maximum UV Index Levels in Iron River for May

The chart shows the monthly maximum UV Index (UVI) for Iron River 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 Iron River typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458810997532
Data source: Iron River 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 Iron River Compares to Other Months

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

This table compares monthly weather conditions in Iron River, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (15°F)34 mm (1.3 inches)89%low
February Weather-10°C (15°F)51 mm (2.0 inches)90%moderate
March Weather-3°C (27°F)47 mm (1.8 inches)87%moderate
April Weather3°C (38°F)91 mm (3.6 inches)84%very high
May Weather12°C (53°F)80 mm (3.2 inches)77%very high
June Weather18°C (64°F)94 mm (3.7 inches)75%very high
July Weather20°C (69°F)98 mm (3.9 inches)74%very high
August Weather18°C (65°F)110 mm (4.3 inches)73%very high
September Weather14°C (58°F)96 mm (3.8 inches)78%high
October Weather7°C (44°F)109 mm (4.3 inches)84%moderate
November Weather-2°C (29°F)53 mm (2.1 inches)89%moderate
December Weather-6°C (21°F)57 mm (2.3 inches)87%low

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