May Weather in Elgin, United States

Last updated: June 24, 2025

The average temperature in Elgin, United States during May is a refreshing 13°C (55°F). However, be prepared for a range of temperatures: it can dip to a chilly -3°C (27°F) or soar to a warm 32°C (89°F). Expect precipitation of about 66 mm (2.6 in) over approximately 9 days, along with a relatively high average humidity of 76%.

May Temperature in Elgin

In May in Elgin, the average temperature is 13°C (55°F). The maximum can reach 32°C (89°F), while the minimum can drop to as low as -3°C (27°F). This wide range of temperatures makes it essential to pack for both warm and cool weather when traveling.

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 13°C (55°F), with highs reaching up to 32°C (89°F) and lows dropping to around -3°C (27°F).

Data source: Temperature data for Elgin generated using information from the Copernicus Climate Change Service.

May Precipitation in Elgin

In Elgin in May, the precipitation amount is 66 mm (2.6 in) over the course of 9 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 66 mm (2.6 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

May Humidity in Elgin

In Elgin in May humidity is 76%. With an average temperature of 13°C (55°F), this humidity feels like a damp, heavy blanket enveloping you, making it feel cooler than it actually is, which can be quite refreshing for short excursions but may also lead to discomfort during prolonged outdoor activities.

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 76%, offering insight into how humid the weather typically is during this month.

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 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 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 8, which falls under the very high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (18°F)	12 mm (0.5 inches)	84%	low
February Weather	-10°C (15°F)	16 mm (0.6 inches)	88%	moderate
March Weather	-1°C (31°F)	24 mm (1.0 inches)	78%	moderate
April Weather	5°C (41°F)	28 mm (1.1 inches)	75%	very high
May Weather	13°C (55°F)	66 mm (2.6 inches)	76%	very high
June Weather	20°C (69°F)	57 mm (2.3 inches)	79%	very high
July Weather	23°C (74°F)	61 mm (2.4 inches)	78%	very high
August Weather	21°C (70°F)	70 mm (2.7 inches)	78%	very high
September Weather	16°C (61°F)	48 mm (1.9 inches)	69%	high
October Weather	6°C (44°F)	57 mm (2.3 inches)	71%	moderate
November Weather	0°C (32°F)	16 mm (0.6 inches)	82%	moderate
December Weather	-5°C (24°F)	20 mm (0.8 inches)	84%	low