May Weather in Quincy, United States

Last updated: June 24, 2025

In May, the average temperature in Quincy, United States hovers around 16°C (60°F). Temperatures can fluctuate dramatically, with minima dropping to -2°C (28°F) and maxima peaking at 34°C (93°F). Expect 139 mm (5.5 in) of precipitation over approximately 15 days, coupled with an average humidity of 81%. Make sure to pack accordingly!

May Temperature in Quincy

In May in Quincy, the average temperature is 16°C (60°F), with maximums reaching up to 34°C (93°F) and minimums dropping as low as -2°C (28°F). This varied climate offers a unique opportunity for travelers to experience both warm and cool weather, making it ideal for a range of outdoor activities.

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

The chart illustrates May temperature patterns in Quincy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Quincy, May typically has an average temperature of 16°C (60°F), with highs reaching up to 34°C (93°F) and lows dropping to around -2°C (28°F).

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

May Precipitation in Quincy

In Quincy in May, the precipitation amount is 139 mm (5.5 in), occurring over 15 days.

May Precipitation Trends in Quincy

The chart displays monthly precipitation patterns in Quincy, 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 Quincy, May typically receives around 139 mm (5.5 inches) of precipitation spread over approximately 15 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 Quincy

In Quincy in May, humidity is 81%. With an average temperature of 16°C (60°F), this humidity feels like a warm, heavy blanket wrapping around you as you travel, making you acutely aware of the sweat on your skin and creating an atmosphere that might dampen your spirits but also invites you to seek out refreshing beverages and shady spots.

May Average Humidity in Quincy

This chart illustrates the average monthly humidity levels in Quincy, 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 Quincy is approximately 81%, 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 Quincy

In Quincy 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 Quincy.

Maximum UV Index Levels in Quincy for May

The chart shows the monthly maximum UV Index (UVI) for Quincy 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 Quincy typically reaches 9, which falls under the very high exposure category.

Data source: Quincy 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 Quincy Compares to Other Months

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

This table compares monthly weather conditions in Quincy, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	71 mm (2.8 inches)	85%	moderate
February Weather	-2°C (28°F)	73 mm (2.9 inches)	85%	moderate
March Weather	3°C (38°F)	89 mm (3.5 inches)	86%	high
April Weather	8°C (47°F)	95 mm (3.7 inches)	87%	very high
May Weather	16°C (60°F)	139 mm (5.5 inches)	81%	very high
June Weather	21°C (71°F)	107 mm (4.2 inches)	82%	very high
July Weather	23°C (75°F)	121 mm (4.8 inches)	81%	very high
August Weather	22°C (72°F)	72 mm (2.8 inches)	79%	very high
September Weather	19°C (66°F)	81 mm (3.2 inches)	78%	very high
October Weather	12°C (54°F)	126 mm (5.0 inches)	81%	high
November Weather	4°C (39°F)	79 mm (3.1 inches)	89%	moderate
December Weather	0°C (33°F)	59 mm (2.3 inches)	86%	low