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May Weather in Ann Arbor, United States

Last updated: June 24, 2025

In May, the average temperature in Ann Arbor, United States hovers around 15°C (60°F). However, you can experience a range of temperatures, with a minimum of -2°C (28°F) and a maximum reaching 33°C (92°F). Be prepared for 121 mm (4.8 in) of precipitation spread over approximately 16 days, contributing to an average humidity of 80%. Enjoy the varied weather while exploring!

May Temperature in Ann Arbor

In May in Ann Arbor, the average temperature is 15°C (60°F). The maximum can reach 33°C (92°F), and the minimum can be as low as -2°C (28°F). It's advisable to prepare for a variety of weather conditions when traveling during this time.

May Weather in Ann Arbor: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Ann Arbor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ann Arbor, May typically has an average temperature of 15°C (60°F), with highs reaching up to 33°C (92°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec272837476070747266543932
Data source: Temperature data for Ann Arbor 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 Ann Arbor

In Ann Arbor in May, the total precipitation amount is 121 mm (4.8 in) spread over 16 days.

May Precipitation Trends in Ann Arbor

The chart displays monthly precipitation patterns in Ann Arbor, 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 Ann Arbor, May typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec64677789121879772671027753
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Ann Arbor

In Ann Arbor in May humidity is 80%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace that can make even the simplest stroll feel like a workout, leaving travelers yearning for a refreshing breeze or shade to escape the weight of the air.

May Average Humidity in Ann Arbor

This chart illustrates the average monthly humidity levels in Ann Arbor, 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 Ann Arbor is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Ann Arbor

In Ann Arbor in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Ann Arbor.

Maximum UV Index Levels in Ann Arbor for May

The chart shows the monthly maximum UV Index (UVI) for Ann Arbor 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 Ann Arbor typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24599101097542
Data source: Ann Arbor 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 Ann Arbor Compares to Other Months

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

This table compares monthly weather conditions in Ann Arbor, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)64 mm (2.5 inches)88%low
February Weather-2°C (28°F)67 mm (2.6 inches)87%moderate
March Weather3°C (37°F)77 mm (3.0 inches)85%moderate
April Weather8°C (47°F)89 mm (3.5 inches)86%very high
May Weather15°C (60°F)121 mm (4.8 inches)80%very high
June Weather21°C (70°F)87 mm (3.4 inches)80%very high
July Weather24°C (75°F)97 mm (3.8 inches)80%very high
August Weather22°C (72°F)71 mm (2.8 inches)80%very high
September Weather19°C (66°F)67 mm (2.6 inches)80%high
October Weather12°C (54°F)102 mm (4.0 inches)84%moderate
November Weather4°C (39°F)77 mm (3.0 inches)89%moderate
December Weather0°C (33°F)53 mm (2.1 inches)86%low

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