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May Weather in Allegan, United States

Last updated: June 24, 2025

In May, the average temperature in Allegan, United States hovers around 15°C (60°F). Be prepared for a range of temperatures, as they can dip to a chilly -3°C (27°F) and soar up to a sweltering 34°C (94°F). Rain is a common occurrence, with about 154 mm (6.1 in) of precipitation falling over 15 days. Don't forget to stay hydrated, as the average humidity sits at a sticky 82%!

May Temperature in Allegan

In May in Allegan, the average temperature is 15°C (60°F), with maximums reaching up to 34°C (94°F) and minimums dipping as low as -3°C (27°F).

Travelers should be prepared for a wide range of temperatures, making layering essential for comfort during their stay.

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

The chart illustrates May temperature patterns in Allegan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Allegan, May typically has an average temperature of 15°C (60°F), with highs reaching up to 34°C (94°F) and lows dropping to around -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec272837466070757266543933
Data source: Temperature data for Allegan 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 Allegan

In Allegan in May, the precipitation amount is 154 mm (6.1 in) over the course of 15 days.

May Precipitation Trends in Allegan

The chart displays monthly precipitation patterns in Allegan, 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 Allegan, May typically receives around 154 mm (6.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec727476921551269677961396867
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Allegan

In Allegan in May humidity is 82%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and draining, which can hinder your travel experience.

May Average Humidity in Allegan

This chart illustrates the average monthly humidity levels in Allegan, 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 Allegan is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%86%87%82%81%78%79%80%82%87%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Allegan

In Allegan 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 Allegan.

Maximum UV Index Levels in Allegan for May

The chart shows the monthly maximum UV Index (UVI) for Allegan 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 Allegan typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101097532
Data source: Allegan 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 Allegan Compares to Other Months

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

This table compares monthly weather conditions in Allegan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)72 mm (2.8 inches)87%moderate
February Weather-2°C (28°F)74 mm (2.9 inches)87%moderate
March Weather3°C (37°F)76 mm (3.0 inches)86%high
April Weather8°C (47°F)92 mm (3.6 inches)87%very high
May Weather15°C (60°F)154 mm (6.1 inches)82%very high
June Weather21°C (70°F)126 mm (5.0 inches)81%very high
July Weather24°C (75°F)96 mm (3.8 inches)78%very high
August Weather22°C (72°F)77 mm (3.0 inches)79%very high
September Weather19°C (66°F)96 mm (3.8 inches)79%high
October Weather12°C (54°F)139 mm (5.5 inches)82%moderate
November Weather4°C (39°F)68 mm (2.7 inches)87%moderate
December Weather0°C (33°F)67 mm (2.7 inches)86%low

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