May Weather in Rosemont, United States

Last updated: June 24, 2025

In May, the average temperature in Rosemont, United States is a comfortable 20°C (68°F). However, be prepared for fluctuations, as temperatures can drop as low as 6°C (43°F) and soar up to a sizzling 39°C (103°F). During this month, expect about 25 mm (1.0 in) of precipitation spread over approximately 3 days, while the average humidity hovers around 74%.

May Temperature in Rosemont

In May in Rosemont, the average temperature is 20°C (68°F). Maximums can reach 39°C (103°F), and minimums can be as low as 6°C (43°F). Pack accordingly to enjoy a comfortable trip, as you'll experience a wide range of temperatures during your stay.

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

The chart illustrates May temperature patterns in Rosemont, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosemont, May typically has an average temperature of 20°C (68°F), with highs reaching up to 39°C (103°F) and lows dropping to around 6°C (43°F).

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

May Precipitation in Rosemont

In Rosemont in May, the precipitation amount is 25 mm (1.0 in) over the course of 3 days.

May Precipitation Trends in Rosemont

The chart displays monthly precipitation patterns in Rosemont, 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 Rosemont, May typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 3 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 Rosemont

In Rosemont in May humidity is 74%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting, prompting travelers to seek shade and hydration more often.

May Average Humidity in Rosemont

This chart illustrates the average monthly humidity levels in Rosemont, 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 Rosemont is approximately 74%, 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 Rosemont

In Rosemont in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Rosemont.

Maximum UV Index Levels in Rosemont for May

The chart shows the monthly maximum UV Index (UVI) for Rosemont 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 Rosemont typically reaches 10, which falls under the very high exposure category.

Data source: Rosemont 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 Rosemont Compares to Other Months

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

This table compares monthly weather conditions in Rosemont, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	128 mm (5.0 inches)	84%	moderate
February Weather	11°C (52°F)	118 mm (4.7 inches)	84%	moderate
March Weather	13°C (55°F)	119 mm (4.7 inches)	83%	high
April Weather	16°C (62°F)	54 mm (2.1 inches)	81%	very high
May Weather	20°C (68°F)	25 mm (1.0 inches)	74%	very high
June Weather	24°C (75°F)	5 mm (0.2 inches)	64%	extreme
July Weather	25°C (77°F)	0 mm (0.0 inches)	44%	extreme
August Weather	25°C (77°F)	0 mm (0.0 inches)	36%	very high
September Weather	23°C (73°F)	3 mm (0.1 inches)	44%	very high
October Weather	18°C (65°F)	41 mm (1.6 inches)	65%	high
November Weather	13°C (55°F)	66 mm (2.6 inches)	84%	moderate
December Weather	9°C (48°F)	116 mm (4.6 inches)	83%	moderate