May Weather in Elgin, United States

Last updated: June 24, 2025

In Elgin, United States, the average temperature in May is a mild 11°C (51°F). However, temperatures can fluctuate dramatically, with a minimum of -4°C (24°F) and a maximum of 28°C (83°F). Rainfall is common, with an average precipitation amount of 72 mm (2.8 in) spread over 13 days. You can expect the air to be quite humid, with an average humidity level of 77%.

May Temperature in Elgin

In May in Elgin, the average temperature is 11°C (51°F). Maximum temperatures can reach 28°C (83°F), while minimums can drop as low as -4°C (24°F). Be prepared for a wide range of temperatures during your visit, so pack accordingly!

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 11°C (51°F), with highs reaching up to 28°C (83°F) and lows dropping to around -4°C (24°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 72 mm (2.8 in) over a period of 13 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 72 mm (2.8 inches) of precipitation spread over approximately 13 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 77%. With an average temperature of 11°C (51°F), this humidity feels like a damp chill, making traveling somewhat uncomfortable and requiring extra layers to stay warm while navigating the dampness in the air.

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 77%, 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 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.

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	-2°C (29°F)	93 mm (3.7 inches)	86%	moderate
February Weather	-2°C (29°F)	144 mm (5.7 inches)	86%	moderate
March Weather	2°C (36°F)	97 mm (3.8 inches)	85%	high
April Weather	6°C (43°F)	95 mm (3.8 inches)	83%	very high
May Weather	11°C (51°F)	72 mm (2.8 inches)	77%	very high
June Weather	15°C (59°F)	44 mm (1.7 inches)	81%	very high
July Weather	20°C (69°F)	3 mm (0.1 inches)	76%	very high
August Weather	20°C (68°F)	16 mm (0.6 inches)	60%	very high
September Weather	14°C (58°F)	39 mm (1.5 inches)	58%	very high
October Weather	7°C (45°F)	73 mm (2.9 inches)	75%	moderate
November Weather	2°C (36°F)	93 mm (3.7 inches)	85%	moderate
December Weather	-1°C (30°F)	111 mm (4.4 inches)	87%	low