May Weather in Groton Long Point, United States

Last updated: June 24, 2025

In May, the average temperature in Groton Long Point, 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 Groton Long Point

In May in Groton Long Point, 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 Groton Long Point an ideal destination for travelers seeking comfortable weather and pleasant outdoor activities.

May Weather in Groton Long Point: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Groton Long Point, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Groton Long Point, 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 Groton Long Point generated using information from the Copernicus Climate Change Service.

May Precipitation in Groton Long Point

In Groton Long Point in May, the precipitation amount is 119 mm (4.7 in) spread over 13 days.

May Precipitation Trends in Groton Long Point

The chart displays monthly precipitation patterns in Groton Long Point, 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 Groton Long Point, 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 Groton Long Point

In Groton Long Point 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 Groton Long Point

This chart illustrates the average monthly humidity levels in Groton Long Point, 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 Groton Long Point 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 Groton Long Point

In Groton Long Point 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 Groton Long Point.

Maximum UV Index Levels in Groton Long Point for May

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

Data source: Groton Long Point 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 Groton Long Point Compares to Other Months

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

This table compares monthly weather conditions in Groton Long Point, 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