May Weather in Wilton, United States

Last updated: June 24, 2025

In Wilton, United States, the average temperature in May hovers around 17°C (63°F). Expect a range from a chilly 2°C (36°F) to a warm 35°C (95°F). With about 144 mm (5.7 in) of precipitation spread over 15 days, don't forget your umbrella! The average humidity is a comfortable 78%, making this month a unique experience in Wilton.

May Temperature in Wilton

In May in Wilton, the average temperature is 17°C (63°F), with maximums reaching 35°C (95°F) and minimums dipping as low as 2°C (36°F). This range makes it a perfect destination for travelers seeking a variety of weather experiences, from warm days to cooler evenings.

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

The chart illustrates May temperature patterns in Wilton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wilton, May typically has an average temperature of 17°C (63°F), with highs reaching up to 35°C (95°F) and lows dropping to around 2°C (36°F).

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

May Precipitation in Wilton

In Wilton in May, the precipitation amount is 144 mm (5.7 in) during a span of 15 days.

May Precipitation Trends in Wilton

The chart displays monthly precipitation patterns in Wilton, 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 Wilton, May typically receives around 144 mm (5.7 inches) of precipitation spread over approximately 15 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Wilton

In Wilton in May, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.

May Average Humidity in Wilton

This chart illustrates the average monthly humidity levels in Wilton, 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 Wilton is approximately 78%, 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 Wilton

In Wilton 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 Wilton.

Maximum UV Index Levels in Wilton for May

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

Data source: Wilton 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 Wilton Compares to Other Months

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

This table compares monthly weather conditions in Wilton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	52 mm (2.0 inches)	81%	moderate
February Weather	-3°C (26°F)	59 mm (2.3 inches)	81%	moderate
March Weather	4°C (40°F)	88 mm (3.4 inches)	81%	high
April Weather	10°C (50°F)	91 mm (3.6 inches)	82%	very high
May Weather	17°C (63°F)	144 mm (5.7 inches)	78%	very high
June Weather	23°C (74°F)	132 mm (5.2 inches)	81%	extreme
July Weather	25°C (77°F)	72 mm (2.8 inches)	79%	very high
August Weather	23°C (74°F)	73 mm (2.9 inches)	77%	very high
September Weather	20°C (69°F)	112 mm (4.4 inches)	78%	very high
October Weather	12°C (54°F)	122 mm (4.8 inches)	78%	high
November Weather	4°C (39°F)	50 mm (2.0 inches)	87%	moderate
December Weather	0°C (32°F)	47 mm (1.8 inches)	84%	moderate