Last updated: June 18, 2025
In May, the average temperature in St. Stephen, Canada is a comfortable 11°C (53°F). However, brace yourself for a range: the minimum can dip to -1°C (31°F), while the maximum can soar to 32°C (90°F). You'll also want to be prepared for 107 mm (4.2 in) of rainfall spread over 12 days, contributing to an average humidity of 78%. Stay cozy and dry this month!
In May in St. Stephen, the average temperature is 11°C (53°F). The maximum can reach 32°C (90°F) and the minimum can be as low as -1°C (31°F). This wide range makes St. Stephen an ideal destination for travelers seeking both warm and cool experiences during their visit.
In St. Stephen in May, the precipitation amount is 107 mm (4.2 in) spread over 12 days.
In St. Stephen in May, humidity is 78%. With an average temperature of 11°C (53°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities somewhat uncomfortable as you navigate through the unpredictable weather.
In St. 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 St. Stephen.
UV Risk Categories
Weather in St. Stephen varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in St. Stephen, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -6°C (22°F) | 98 mm (3.9 inches) | 83% | low |
February Weather | -5°C (23°F) | 90 mm (3.5 inches) | 84% | moderate |
March Weather | -1°C (30°F) | 72 mm (2.8 inches) | 82% | moderate |
April Weather | 5°C (42°F) | 119 mm (4.7 inches) | 80% | high |
May Weather | 11°C (53°F) | 107 mm (4.2 inches) | 78% | very high |
June Weather | 17°C (62°F) | 91 mm (3.6 inches) | 82% | very high |
July Weather | 20°C (68°F) | 91 mm (3.6 inches) | 84% | very high |
August Weather | 20°C (68°F) | 76 mm (3.0 inches) | 82% | very high |
September Weather | 16°C (61°F) | 88 mm (3.5 inches) | 82% | high |
October Weather | 10°C (50°F) | 109 mm (4.3 inches) | 82% | moderate |
November Weather | 3°C (37°F) | 136 mm (5.4 inches) | 84% | moderate |
December Weather | -3°C (26°F) | 122 mm (4.8 inches) | 82% | low |