May Weather in Stonington, United States

Last updated: June 24, 2025

In May, the average temperature in Stonington, United States hovers around 13°C (55°F). Expect a range from a chilly 3°C (38°F) to a pleasant 22°C (72°F). During this time, 119 mm (4.7 in) of rain usually falls over 13 days, contributing to an average humidity of 75%. Be prepared for a mix of cool and humid days this season!

May Temperature in Stonington

In May in Stonington, the average temperature is 13°C (55°F). The maximum can reach 22°C (72°F), while the minimum can be as low as 3°C (38°F). This mild climate makes Stonington an ideal destination for travelers seeking comfortable weather and pleasant outdoor activities.

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 13°C (55°F), with highs reaching up to 22°C (72°F) and lows dropping to around 3°C (38°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 119 mm (4.7 in) spread over 13 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 119 mm (4.7 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 Stonington

In Stonington in May humidity is 75%. With average temperature 13°C (55°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions less enjoyable without layered clothing and frequent breaks to warm up indoors.

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 75%, 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 (35°F)	83 mm (3.3 inches)	84%	moderate
February Weather	2°C (36°F)	109 mm (4.3 inches)	84%	moderate
March Weather	4°C (39°F)	108 mm (4.3 inches)	82%	high
April Weather	8°C (47°F)	136 mm (5.3 inches)	79%	very high
May Weather	13°C (55°F)	119 mm (4.7 inches)	75%	very high
June Weather	18°C (64°F)	84 mm (3.3 inches)	78%	very high
July Weather	22°C (72°F)	115 mm (4.5 inches)	76%	very high
August Weather	22°C (73°F)	101 mm (4.0 inches)	76%	very high
September Weather	20°C (68°F)	101 mm (4.0 inches)	75%	very high
October Weather	16°C (60°F)	157 mm (6.2 inches)	75%	high
November Weather	9°C (49°F)	113 mm (4.4 inches)	80%	moderate
December Weather	4°C (40°F)	141 mm (5.6 inches)	80%	low