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May Weather in Mundelein, United States

Last updated: June 24, 2025

In Mundelein, United States, the average temperature in May hovers around 14°C (57°F). Expect a minimum chill of 0°C (33°F) and the occasional warm day reaching up to 29°C (85°F). With 164 mm (6.5 in) of precipitation spread over 14 days, prepare for some wet weather amidst the lush ambiance. The air carries an average humidity of 78%, adding a touch of moisture to the atmosphere.

May Temperature in Mundelein

In May in Mundelein, the average temperature is 14°C (57°F), with maximums reaching up to 29°C (85°F) and minimums dropping as low as 0°C (33°F). It's advisable to pack layers for your travel, as the weather can vary significantly throughout the day.

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

The chart illustrates May temperature patterns in Mundelein, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mundelein, May typically has an average temperature of 14°C (57°F), with highs reaching up to 29°C (85°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec262737455668747267543933
Data source: Temperature data for Mundelein 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 Mundelein

In Mundelein in May, the precipitation amount is 164 mm (6.5 in) spread over 14 days.

May Precipitation Trends in Mundelein

The chart displays monthly precipitation patterns in Mundelein, 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 Mundelein, May typically receives around 164 mm (6.5 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec6867761181641098483851335859
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Mundelein

In Mundelein in May, humidity is 78%. With an average temperature of 14°C (57°F), this humidity feels like a damp blanket wrapping around you, making outdoor exploration a bit uncomfortable but still enjoyable if you stay hydrated and plan for breaks in the shade.

May Average Humidity in Mundelein

This chart illustrates the average monthly humidity levels in Mundelein, 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 Mundelein is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Mundelein

In Mundelein 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 Mundelein.

Maximum UV Index Levels in Mundelein for May

The chart shows the monthly maximum UV Index (UVI) for Mundelein 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 Mundelein typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101098532
Data source: Mundelein 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 Mundelein Compares to Other Months

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

This table compares monthly weather conditions in Mundelein, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)68 mm (2.7 inches)85%low
February Weather-3°C (28°F)67 mm (2.6 inches)85%moderate
March Weather3°C (38°F)76 mm (3.0 inches)85%high
April Weather7°C (46°F)118 mm (4.6 inches)85%very high
May Weather14°C (57°F)164 mm (6.5 inches)78%very high
June Weather20°C (68°F)109 mm (4.3 inches)80%very high
July Weather23°C (74°F)84 mm (3.3 inches)78%very high
August Weather22°C (73°F)83 mm (3.3 inches)76%very high
September Weather19°C (67°F)85 mm (3.3 inches)79%very high
October Weather12°C (54°F)133 mm (5.2 inches)83%moderate
November Weather4°C (40°F)58 mm (2.3 inches)88%moderate
December Weather1°C (33°F)59 mm (2.3 inches)81%low

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