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May Weather in Elgin, United States

Last updated: June 24, 2025

In Elgin, United States, the average temperature in May is a comfortable 15°C (59°F). However, temperatures can vary dramatically, ranging from a chilly -1°C (31°F) to a balmy 36°C (96°F). During this month, expect about 146 mm (5.7 in) of precipitation spread over 14 days, accompanied by an average humidity of 79%, adding a touch of moisture to the air.

May Temperature in Elgin

In May in Elgin, the average temperature is 15°C (59°F). The maximum can reach 36°C (96°F) and the minimum can be as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling to Elgin during this month.

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

The chart illustrates May temperature patterns in Elgin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Elgin, May typically has an average temperature of 15°C (59°F), with highs reaching up to 36°C (96°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec181834445970737064483425
Data source: Temperature data for Elgin 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 Elgin

In Elgin in May, the precipitation amount is 146 mm (5.7 in) over a span of 14 days.

May Precipitation Trends in Elgin

The chart displays monthly precipitation patterns in Elgin, 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 Elgin, May typically receives around 146 mm (5.7 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec35455793146135951271161094745
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Elgin

In Elgin in May humidity is 79%. With an average temperature of 15°C (59°F), this humidity feels like a muggy embrace that clings to your skin, making outdoor activities somewhat uncomfortable. Travelers may find themselves frequently seeking shelter or refreshing drinks to combat the warm, damp air, as the moisture in the atmosphere feels particularly heavy, especially during longer excursions.

May Average Humidity in Elgin

This chart illustrates the average monthly humidity levels in Elgin, 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 Elgin is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Elgin

In Elgin 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 Elgin.

Maximum UV Index Levels in Elgin for May

The chart shows the monthly maximum UV Index (UVI) for Elgin 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 Elgin typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3458910997532
Data source: Elgin 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 Elgin Compares to Other Months

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

This table compares monthly weather conditions in Elgin, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)35 mm (1.4 inches)88%moderate
February Weather-8°C (19°F)45 mm (1.8 inches)89%moderate
March Weather1°C (34°F)57 mm (2.2 inches)86%moderate
April Weather7°C (44°F)93 mm (3.7 inches)85%very high
May Weather15°C (59°F)146 mm (5.7 inches)79%very high
June Weather21°C (71°F)135 mm (5.3 inches)80%very high
July Weather23°C (74°F)95 mm (3.7 inches)80%very high
August Weather21°C (70°F)127 mm (5.0 inches)78%very high
September Weather18°C (64°F)116 mm (4.6 inches)80%high
October Weather9°C (49°F)109 mm (4.3 inches)84%moderate
November Weather1°C (34°F)47 mm (1.9 inches)89%moderate
December Weather-4°C (25°F)45 mm (1.8 inches)85%low

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