May Weather in Stonington, United States

Last updated: June 24, 2025

In Stonington, United States, the average temperature for May hovers around 9°C (49°F), with a minimum of 2°C (37°F) and a maximum reaching 17°C (64°F). Prepare for some wet days, as you can expect 105 mm (4.1 in) of precipitation spread over 11 days. Don’t forget to layer up, as the average humidity stands at a brisk 76%!

May Temperature in Stonington

In May in Stonington, the average temperature is 9°C (49°F). The maximum can reach 17°C (64°F), and the minimum can be as low as 2°C (37°F). It's advisable to pack layers and a warm jacket for your travels during this time.

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

The chart illustrates May temperature patterns in Stonington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stonington, May typically has an average temperature of 9°C (49°F), with highs reaching up to 17°C (64°F) and lows dropping to around 2°C (37°F).

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

May Precipitation in Stonington

In Stonington in May, the precipitation amount is 105 mm (4.1 in) over the course of 11 days.

May Precipitation Trends in Stonington

The chart displays monthly precipitation patterns in Stonington, 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 Stonington, May typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 11 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 Stonington

In Stonington in May, humidity is 76%. With an average temperature of 9°C (49°F), this humidity feels like a chilly embrace, making outdoor adventures a bit uncomfortable as the dampness seeps into your clothes and lingers in the air, often leading to a sense of coolness that can be refreshing but also dampens the joy of exploration.

May Average Humidity in Stonington

This chart illustrates the average monthly humidity levels in Stonington, 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 Stonington 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 Stonington

In Stonington 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 Stonington.

Maximum UV Index Levels in Stonington for May

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

Data source: Stonington 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 Stonington Compares to Other Months

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

This table compares monthly weather conditions in Stonington, 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)	108 mm (4.3 inches)	88%	low
February Weather	-1°C (30°F)	105 mm (4.1 inches)	88%	moderate
March Weather	0°C (33°F)	84 mm (3.3 inches)	85%	moderate
April Weather	5°C (41°F)	157 mm (6.2 inches)	81%	high
May Weather	9°C (49°F)	105 mm (4.1 inches)	76%	very high
June Weather	13°C (56°F)	87 mm (3.4 inches)	74%	very high
July Weather	16°C (62°F)	92 mm (3.6 inches)	74%	very high
August Weather	18°C (64°F)	86 mm (3.4 inches)	74%	very high
September Weather	16°C (60°F)	102 mm (4.0 inches)	77%	high
October Weather	12°C (54°F)	145 mm (5.7 inches)	82%	moderate
November Weather	6°C (43°F)	138 mm (5.4 inches)	85%	moderate
December Weather	1°C (34°F)	155 mm (6.1 inches)	84%	low