May Weather in Saint Stephen, United States

Last updated: June 24, 2025

In May, the average temperature in Saint Stephen, United States is a pleasant 14°C (57°F), with potential extremes ranging from a chilly -1°C (30°F) to a sizzling 34°C (93°F). Expect a moderate precipitation amount of 86 mm (3.4 in) over approximately 11 days, contributing to an average humidity of 78%. Prepare accordingly for a mix of warmth and moisture!

May Temperature in Saint Stephen

In May in Saint Stephen, the average temperature is 14°C (57°F). Maximums can reach 34°C (93°F), while minimums can drop as low as -1°C (30°F). This wide temperature range makes Saint Stephen a destination where travelers should be prepared for varying weather conditions.

May Weather in Saint Stephen: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Saint Stephen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Stephen, May typically has an average temperature of 14°C (57°F), with highs reaching up to 34°C (93°F) and lows dropping to around -1°C (30°F).

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

May Precipitation in Saint Stephen

In Saint Stephen in May, the precipitation amount is 86 mm (3.4 in), spread over 11 days.

May Precipitation Trends in Saint Stephen

The chart displays monthly precipitation patterns in Saint Stephen, 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 Saint Stephen, May typically receives around 86 mm (3.4 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 Saint Stephen

In Saint Stephen in May, humidity is 78%. With an average temperature of 14°C (57°F), this humidity feels like a damp blanket wrapping around you, making outdoor exploration a bit uncomfortable but still enjoyable if you stay hydrated and plan for breaks in the shade.

May Average Humidity in Saint Stephen

This chart illustrates the average monthly humidity levels in Saint Stephen, 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 Saint Stephen 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 Saint Stephen

In Saint Stephen 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 Saint Stephen.

Maximum UV Index Levels in Saint Stephen for May

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

Data source: Saint Stephen 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 Saint Stephen Compares to Other Months

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

This table compares monthly weather conditions in Saint Stephen, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (14°F)	19 mm (0.7 inches)	87%	low
February Weather	-10°C (14°F)	23 mm (0.9 inches)	90%	moderate
March Weather	-1°C (31°F)	46 mm (1.8 inches)	85%	moderate
April Weather	5°C (41°F)	78 mm (3.1 inches)	84%	high
May Weather	14°C (57°F)	86 mm (3.4 inches)	78%	very high
June Weather	21°C (70°F)	72 mm (2.8 inches)	80%	very high
July Weather	23°C (73°F)	105 mm (4.1 inches)	81%	very high
August Weather	21°C (69°F)	139 mm (5.5 inches)	81%	very high
September Weather	17°C (62°F)	115 mm (4.5 inches)	81%	high
October Weather	8°C (46°F)	104 mm (4.1 inches)	84%	moderate
November Weather	-1°C (31°F)	30 mm (1.2 inches)	88%	moderate
December Weather	-6°C (21°F)	46 mm (1.8 inches)	84%	low