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May Weather in Ontonagon, United States

Last updated: June 24, 2025

In May, the average temperature in Ontonagon, United States is a moderate 12°C (54°F). However, temperatures can vary significantly, with a minimum of -4°C (26°F) and a maximum reaching 34°C (94°F). Expect 71 mm (2.8 in) of precipitation spread across 9 days, contributing to a cozy average humidity of 78%.

May Temperature in Ontonagon

In May in Ontonagon, the average temperature is 12°C (54°F). Maximums can reach 34°C (94°F), and minimums can be as low as -4°C (26°F). Travelers should be prepared for a wide range of temperatures when visiting during this time.

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

The chart illustrates May temperature patterns in Ontonagon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ontonagon, May typically has an average temperature of 12°C (54°F), with highs reaching up to 34°C (94°F) and lows dropping to around -4°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec181628385364696659463123
Data source: Temperature data for Ontonagon 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 Ontonagon

In Ontonagon in May, the precipitation amount is 71 mm (2.8 in) spread over 9 days.

May Precipitation Trends in Ontonagon

The chart displays monthly precipitation patterns in Ontonagon, 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 Ontonagon, May typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec44605482719077111921187278
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Ontonagon

In Ontonagon in May humidity is 78%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill settling in, making travel a bit uncomfortable as the air clings to your skin, leaving you feeling cooler than the thermometer suggests.

May Average Humidity in Ontonagon

This chart illustrates the average monthly humidity levels in Ontonagon, 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 Ontonagon is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%92%88%86%78%74%70%71%74%81%86%90%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Ontonagon

In Ontonagon 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 Ontonagon.

Maximum UV Index Levels in Ontonagon for May

The chart shows the monthly maximum UV Index (UVI) for Ontonagon 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 Ontonagon typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245789987532
Data source: Ontonagon 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 Ontonagon Compares to Other Months

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

This table compares monthly weather conditions in Ontonagon, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)44 mm (1.7 inches)92%low
February Weather-9°C (17°F)60 mm (2.3 inches)92%moderate
March Weather-2°C (28°F)54 mm (2.1 inches)88%moderate
April Weather3°C (38°F)82 mm (3.2 inches)86%high
May Weather12°C (54°F)71 mm (2.8 inches)78%very high
June Weather18°C (64°F)90 mm (3.5 inches)74%very high
July Weather21°C (69°F)77 mm (3.0 inches)70%very high
August Weather19°C (66°F)111 mm (4.4 inches)71%very high
September Weather15°C (60°F)92 mm (3.6 inches)74%high
October Weather8°C (46°F)118 mm (4.6 inches)81%moderate
November Weather0°C (31°F)72 mm (2.8 inches)86%moderate
December Weather-5°C (24°F)78 mm (3.1 inches)90%low

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